diff --git a/build.gradle b/build.gradle
index 4e8a6bd..92b68eb 100644
--- a/build.gradle
+++ b/build.gradle
@@ -61,7 +61,7 @@ artifacts {
 
 group = "com.indeed"
 archivesBaseName = "consul-api"
-version = "1.4.8"
+version = "1.4.9"
 
 def doUploadArchives = project.hasProperty('sonatypeUsername') && project.hasProperty('sonatypePassword')
 if (doUploadArchives) {
diff --git a/src/main/java/com/ecwid/consul/v1/Filter.java b/src/main/java/com/ecwid/consul/v1/Filter.java
index e54763e..60707fd 100644
--- a/src/main/java/com/ecwid/consul/v1/Filter.java
+++ b/src/main/java/com/ecwid/consul/v1/Filter.java
@@ -27,10 +27,12 @@ public enum MatchingOperator {
 		NOT_MATCHES("not matches", false);
 
 		private final String representation;
+		private final String encoded;
 		private final boolean unary;
 
 		MatchingOperator(final String representation, final boolean unary) {
 			this.representation = representation;
+			encoded = representation.replaceAll(" ", SPACE);
 			this.unary = unary;
 		}
 
@@ -138,7 +140,7 @@ public Filter not() {
 
 	@Override
 	public List<String> toUrlParameters() {
-		return Collections.singletonList("filter=" + toString());
+		return Collections.singletonList("filter=" + toEncodedString());
 	}
 
 	@Override
@@ -181,6 +183,27 @@ public String toString() {
 		return prefix + "(" + result + ")";
 	}
 
+	private static final String SPACE = "%20";
+	private static final String DOUBLEQUOTE = "%22";
+
+	public String toEncodedString() {
+		final String prefix = positive ? "" : ("not" + SPACE);
+		if (leaf == null) {
+			final String result = children.stream().map(Filter::toEncodedString).collect(Collectors.joining(SPACE + boolOp + SPACE));
+			if ((parent == null) && positive) {
+				return result;
+			}
+			return prefix + "(" + result + ")";
+		}
+		if (leaf.value == null) {
+			return prefix + leaf.selector + SPACE + leaf.matchingOperator.encoded;
+		}
+		if ((leaf.matchingOperator == MatchingOperator.IN) || (leaf.matchingOperator == MatchingOperator.NOT_IN)) {
+			return prefix + DOUBLEQUOTE + leaf.value + DOUBLEQUOTE + SPACE + leaf.matchingOperator.encoded + SPACE + leaf.selector;
+		}
+		return prefix + leaf.selector + SPACE + leaf.matchingOperator.encoded + SPACE + DOUBLEQUOTE + leaf.value + DOUBLEQUOTE;
+	}
+
 	private enum BoolOp {
 		OR("or"),
 		AND("and");
diff --git a/src/main/java/com/ecwid/consul/v1/health/HealthServicesRequest.java b/src/main/java/com/ecwid/consul/v1/health/HealthServicesRequest.java
index 8f6d13a..48f4b4a 100644
--- a/src/main/java/com/ecwid/consul/v1/health/HealthServicesRequest.java
+++ b/src/main/java/com/ecwid/consul/v1/health/HealthServicesRequest.java
@@ -80,7 +80,7 @@ public String getNear() {
 
 	/**
 	 * @deprecated use {@link HealthServicesRequest.Builder#setFilter(Filter)} to filter by tags
-	 * e.g {@code * setFilter(Filter.in(tag, Filter.Selector.of("Service.tags")))}
+	 * e.g {@code * setFilter(Filter.in(tag, Filter.Selector.of("Service.Tags")))}
 	 */
 	@Deprecated
 	public String getTag() {
@@ -89,7 +89,7 @@ public String getTag() {
 
 	/**
 	 * @deprecated use {@link HealthServicesRequest.Builder#setFilter(Filter)} to filter by tags
-	 * e.g {@code * setFilter(Filter.in(tag, Filter.Selector.of("Service.tags")))}
+	 * e.g {@code * setFilter(Filter.in(tag, Filter.Selector.of("Service.Tags")))}
 	 */
 	@Deprecated
 	public String[] getTags() {
@@ -146,7 +146,7 @@ public Builder setNear(String near) {
 
 		/**
 		 * @deprecated use {@link #setFilter(Filter)}
-		 * e.g {@code * setFilter(Filter.in(tag, Filter.Selector.of("Service.tags")))}
+		 * e.g {@code * setFilter(Filter.in(tag, Filter.Selector.of("Service.Tags")))}
 		 */
 		@Deprecated
 		public Builder setTag(String tag) {
@@ -156,7 +156,7 @@ public Builder setTag(String tag) {
 
 		/**
 		 * @deprecated use {@link #setFilter(Filter)}
-		 * e.g {@code * setFilter(Filter.in(tag, Filter.Selector.of("Service.tags")))}
+		 * e.g {@code * setFilter(Filter.in(tag, Filter.Selector.of("Service.Tags")))}
 		 */
 		@Deprecated
 		public Builder setTags(String[] tags) {
diff --git a/src/test/java/com/ecwid/consul/v1/FilterTest.java b/src/test/java/com/ecwid/consul/v1/FilterTest.java
index b7cd38e..1070cbf 100644
--- a/src/test/java/com/ecwid/consul/v1/FilterTest.java
+++ b/src/test/java/com/ecwid/consul/v1/FilterTest.java
@@ -32,60 +32,60 @@ void shouldVerify() {
 	@Test
 	public void of() {
 		Filter actual = Filter.of(Filter.MatchingOperator.EQUAL, Selector.of("foo"), "bar");
-		assertEquals("foo = \"bar\"", actual.toString());
+		assertFilter("foo = \"bar\"", actual);
 		assertThrows(IllegalArgumentException.class, ()-> Filter.of(Filter.MatchingOperator.EQUAL, Selector.of("foo")));
 
 		actual = Filter.of(Filter.MatchingOperator.NOT_EQUAL, Selector.of("foo"), "bar");
-		assertEquals("foo != \"bar\"", actual.toString());
+		assertFilter("foo != \"bar\"", actual);
 		assertThrows(IllegalArgumentException.class, ()-> Filter.of(Filter.MatchingOperator.NOT_EQUAL, Selector.of("foo")));
 
 		actual = Filter.of(Filter.MatchingOperator.IS_EMPTY, Selector.of("foo"), null);
-		assertEquals("foo is empty", actual.toString());
+		assertFilter("foo is empty", actual);
 		actual = Filter.of(Filter.MatchingOperator.IS_EMPTY, Selector.of("foo"));
-		assertEquals("foo is empty", actual.toString());
+		assertFilter("foo is empty", actual);
 		assertThrows(IllegalArgumentException.class, ()-> Filter.of(Filter.MatchingOperator.IS_EMPTY, Selector.of("foo"), "bar"));
 
 		actual = Filter.of(Filter.MatchingOperator.IS_NOT_EMPTY, Selector.of("foo"), null);
-		assertEquals("foo is not empty", actual.toString());
+		assertFilter("foo is not empty", actual);
 		actual = Filter.of(Filter.MatchingOperator.IS_NOT_EMPTY, Selector.of("foo"));
-		assertEquals("foo is not empty", actual.toString());
+		assertFilter("foo is not empty", actual);
 		assertThrows(IllegalArgumentException.class, ()-> Filter.of(Filter.MatchingOperator.IS_NOT_EMPTY, Selector.of("foo"), "bar"));
 
 		actual = Filter.of(Filter.MatchingOperator.IN, Selector.of("foo"), "bar");
-		assertEquals("\"bar\" in foo", actual.toString());
+		assertFilter("\"bar\" in foo", actual);
 		assertThrows(IllegalArgumentException.class, ()-> Filter.of(Filter.MatchingOperator.IN, Selector.of("foo")));
 
 		actual = Filter.of(Filter.MatchingOperator.NOT_IN, Selector.of("foo"), "bar");
-		assertEquals("\"bar\" not in foo", actual.toString());
+		assertFilter("\"bar\" not in foo", actual);
 		assertThrows(IllegalArgumentException.class, ()-> Filter.of(Filter.MatchingOperator.NOT_IN, Selector.of("foo")));
 
 		actual = Filter.of(Filter.MatchingOperator.CONTAINS, Selector.of("foo"), "bar");
-		assertEquals("foo contains \"bar\"", actual.toString());
+		assertFilter("foo contains \"bar\"", actual);
 		assertThrows(IllegalArgumentException.class, ()-> Filter.of(Filter.MatchingOperator.CONTAINS, Selector.of("foo")));
 
 		actual = Filter.of(Filter.MatchingOperator.NOT_CONTAINS, Selector.of("foo"), "bar");
-		assertEquals("foo not contains \"bar\"", actual.toString());
+		assertFilter("foo not contains \"bar\"", actual);
 		assertThrows(IllegalArgumentException.class, ()-> Filter.of(Filter.MatchingOperator.NOT_CONTAINS, Selector.of("foo")));
 
 		actual = Filter.of(Filter.MatchingOperator.MATCHES, Selector.of("foo"), "bar");
-		assertEquals("foo matches \"bar\"", actual.toString());
+		assertFilter("foo matches \"bar\"", actual);
 		assertThrows(IllegalArgumentException.class, ()-> Filter.of(Filter.MatchingOperator.MATCHES, Selector.of("foo")));
 
 		actual = Filter.of(Filter.MatchingOperator.NOT_MATCHES, Selector.of("foo"), "bar");
-		assertEquals("foo not matches \"bar\"", actual.toString());
+		assertFilter("foo not matches \"bar\"", actual);
 		assertThrows(IllegalArgumentException.class, ()-> Filter.of(Filter.MatchingOperator.NOT_MATCHES, Selector.of("foo")));
 	}
 
 	@Test
 	public void in() {
 		final Filter actual = Filter.in("bar", Selector.of("foo"));
-		assertEquals("\"bar\" in foo", actual.toString());
+		assertFilter("\"bar\" in foo", actual);
 	}
 
 	@Test
 	public void notIn() {
 		final Filter actual = Filter.notIn("bar", Selector.of("foo"));
-		assertEquals("\"bar\" not in foo", actual.toString());
+		assertFilter("\"bar\" not in foo", actual);
 	}
 
 	@Test
@@ -96,15 +96,15 @@ public void and() {
 				Filter.of(Filter.MatchingOperator.EQUAL, Selector.of("foo2"), "bar2")
 		);
 
-		assertEquals("foo = \"bar\" and foo1 = \"bar1\" and foo2 = \"bar2\"", actual.toString());
+		assertFilter("foo = \"bar\" and foo1 = \"bar1\" and foo2 = \"bar2\"", actual);
 
 		final Filter actual2 = f
 				.or(Filter.of(Filter.MatchingOperator.EQUAL, Selector.of("foo1"), "bar1"))
 				.and(Filter.of(Filter.MatchingOperator.EQUAL, Selector.of("foo3"), "bar3"));
-		assertEquals("(foo = \"bar\" or foo1 = \"bar1\") and foo3 = \"bar3\"", actual2.toString());
+		assertFilter("(foo = \"bar\" or foo1 = \"bar1\") and foo3 = \"bar3\"", actual2);
 
 		final Filter actual3 = f.and();
-		assertEquals("foo = \"bar\"", actual3.toString());
+		assertFilter("foo = \"bar\"", actual3);
 	}
 
 	@Test
@@ -114,7 +114,7 @@ public void addAll() {
 				Filter.of(Filter.MatchingOperator.EQUAL, Selector.of("foo1"), "bar1")
 			}
 		));
-		assertEquals("foo = \"bar\" and foo1 = \"bar1\"", actual.toString());
+		assertFilter("foo = \"bar\" and foo1 = \"bar1\"", actual);
 	}
 
 	@Test
@@ -125,15 +125,15 @@ public void or() {
 				Filter.of(Filter.MatchingOperator.EQUAL, Selector.of("foo2"), "bar2")
 		);
 
-		assertEquals("foo = \"bar\" or foo1 = \"bar1\" or foo2 = \"bar2\"", actual.toString());
+		assertFilter("foo = \"bar\" or foo1 = \"bar1\" or foo2 = \"bar2\"", actual);
 
 		final Filter actual2 = f
 				.and(Filter.of(Filter.MatchingOperator.EQUAL, Selector.of("foo1"), "bar1"))
 				.or(Filter.of(Filter.MatchingOperator.EQUAL, Selector.of("foo3"), "bar3"));
-		assertEquals("(foo = \"bar\" and foo1 = \"bar1\") or foo3 = \"bar3\"", actual2.toString());
+		assertFilter("(foo = \"bar\" and foo1 = \"bar1\") or foo3 = \"bar3\"", actual2);
 
 		final Filter actual3 = f.or();
-		assertEquals("foo = \"bar\"", actual3.toString());
+		assertFilter("foo = \"bar\"", actual3);
 	}
 
 	@Test
@@ -143,25 +143,31 @@ public void orAll() {
 						Filter.of(Filter.MatchingOperator.EQUAL, Selector.of("foo1"), "bar1")
 				}
 		));
-		assertEquals("foo = \"bar\" or foo1 = \"bar1\"", actual.toString());
+		assertFilter("foo = \"bar\" or foo1 = \"bar1\"", actual);
 	}
 
 	@Test
 	public void not() {
 		final Filter f = Filter.of(Filter.MatchingOperator.EQUAL, Selector.of("foo"), "bar");
-		assertEquals("foo = \"bar\"", f.toString());
-		assertEquals("not foo = \"bar\"", f.not().toString());
-		assertEquals("foo = \"bar\"", f.not().not().toString());
+		assertFilter("foo = \"bar\"", f);
+		assertFilter("not foo = \"bar\"", f.not());
+		assertFilter("foo = \"bar\"", f.not().not());
 
 		final Filter f2 = f.and(Filter.of(Filter.MatchingOperator.EQUAL, Selector.of("foo1"), "bar2"));
-		assertEquals("foo = \"bar\" and foo1 = \"bar2\"", f2.toString());
-		assertEquals("not (foo = \"bar\" and foo1 = \"bar2\")", f2.not().toString());
+		assertFilter("foo = \"bar\" and foo1 = \"bar2\"", f2);
+		assertFilter("not (foo = \"bar\" and foo1 = \"bar2\")", f2.not());
 	}
 
 	@Test
 	public void toUrlParameters() {
 		final Filter subject = Filter.of(Filter.MatchingOperator.EQUAL, Selector.of("foo"), "bar");
 		final List<String> actual = subject.toUrlParameters();
-		assertEquals(Collections.singletonList("filter=foo = \"bar\""), actual);
+		assertEquals(Collections.singletonList("filter=foo%20=%20%22bar%22"), actual);
+	}
+
+	private void assertFilter(final String expected, final Filter subject) {
+		assertEquals(expected, subject.toString());
+		final String encoded = expected.replaceAll(" ", "%20").replaceAll("\"", "%22");
+		assertEquals(encoded, subject.toEncodedString());
 	}
 }