diff --git a/.gitignore b/.gitignore
index 596c6c59..49761212 100644
--- a/.gitignore
+++ b/.gitignore
@@ -31,3 +31,4 @@ Thumbs.db
 bin
 doc/node
 doc/node_modules
+*/docker/plugins/*
diff --git a/kafka-connect-neo4j/src/main/kotlin/streams/kafka/connect/common/Neo4jConnectorConfig.kt b/kafka-connect-neo4j/src/main/kotlin/streams/kafka/connect/common/Neo4jConnectorConfig.kt
index 6a759ec7..b804cdbf 100644
--- a/kafka-connect-neo4j/src/main/kotlin/streams/kafka/connect/common/Neo4jConnectorConfig.kt
+++ b/kafka-connect-neo4j/src/main/kotlin/streams/kafka/connect/common/Neo4jConnectorConfig.kt
@@ -76,7 +76,11 @@ open class Neo4jConnectorConfig(configDef: ConfigDef,
         authenticationPassword = getPassword(AUTHENTICATION_BASIC_PASSWORD).value()
         authenticationKerberosTicket = getPassword(AUTHENTICATION_KERBEROS_TICKET).value()
 
-        serverUri = getString(SERVER_URI).split(",").map { URI(it) }
+        serverUri = getString(SERVER_URI).split(",").map {
+            val uri = URI(it)
+            if (uri.port == -1) URI("$it:7687") else uri
+        }
+
         connectionLivenessCheckTimeout = getLong(CONNECTION_LIVENESS_CHECK_TIMEOUT_MSECS)
         connectionMaxConnectionLifetime = getLong(CONNECTION_MAX_CONNECTION_LIFETIME_MSECS)
         connectionPoolMaxSize = getInt(CONNECTION_POOL_MAX_SIZE)
diff --git a/kafka-connect-neo4j/src/test/kotlin/streams/kafka/connect/sink/Neo4jSinkConnectorConfigTest.kt b/kafka-connect-neo4j/src/test/kotlin/streams/kafka/connect/sink/Neo4jSinkConnectorConfigTest.kt
index 4d22d3a6..d056e101 100644
--- a/kafka-connect-neo4j/src/test/kotlin/streams/kafka/connect/sink/Neo4jSinkConnectorConfigTest.kt
+++ b/kafka-connect-neo4j/src/test/kotlin/streams/kafka/connect/sink/Neo4jSinkConnectorConfigTest.kt
@@ -95,6 +95,20 @@ class Neo4jSinkConnectorConfigTest {
         assertEquals(c, config.serverUri[2].toString())
     }
 
+    @Test
+    fun `should return URIs with default port if port does not exist`() {
+        val a = "bolt://neo4j.com"
+        val b = "bolt://neo4j2.com"
+
+        val originals = mapOf(SinkConnector.TOPICS_CONFIG to "foo",
+            "${Neo4jSinkConnectorConfig.TOPIC_CYPHER_PREFIX}foo" to "CREATE (p:Person{name: event.firstName})",
+            Neo4jConnectorConfig.SERVER_URI to "$a,$b")
+        val config = Neo4jSinkConnectorConfig(originals)
+
+        assertEquals("$a:7687", config.serverUri[0].toString())
+        assertEquals("$b:7687", config.serverUri[1].toString())
+    }
+
     @Test
     fun `should return the configuration with shuffled topic order`() {
         val originals = mapOf(SinkConnector.TOPICS_CONFIG to "bar,foo",
diff --git a/kafka-connect-neo4j/src/test/kotlin/streams/kafka/connect/source/Neo4jSourceConnectorConfigTest.kt b/kafka-connect-neo4j/src/test/kotlin/streams/kafka/connect/source/Neo4jSourceConnectorConfigTest.kt
index 570cb184..8101f0df 100644
--- a/kafka-connect-neo4j/src/test/kotlin/streams/kafka/connect/source/Neo4jSourceConnectorConfigTest.kt
+++ b/kafka-connect-neo4j/src/test/kotlin/streams/kafka/connect/source/Neo4jSourceConnectorConfigTest.kt
@@ -2,8 +2,8 @@ package streams.kafka.connect.source
 
 import org.apache.kafka.common.config.ConfigException
 import org.junit.Test
+import streams.kafka.connect.common.Neo4jConnectorConfig
 import kotlin.test.assertEquals
-import kotlin.test.assertNull
 
 class Neo4jSourceConnectorConfigTest {
 
@@ -61,4 +61,21 @@ class Neo4jSourceConnectorConfigTest {
         val config = Neo4jSourceConnectorConfig(originals)
         assertEquals("", config.streamingProperty)
     }
+
+    @Test
+    fun `should return URIs with default port if port does not exist`() {
+        val a = "bolt://neo4j.com"
+        val b = "bolt://neo4j2.com"
+
+        val originals = mapOf(Neo4jSourceConnectorConfig.SOURCE_TYPE to SourceType.QUERY.toString(),
+            Neo4jSourceConnectorConfig.SOURCE_TYPE_QUERY to "MATCH (n) RETURN n",
+            Neo4jSourceConnectorConfig.TOPIC to "topic",
+            Neo4jSourceConnectorConfig.STREAMING_POLL_INTERVAL to "10",
+            Neo4jSourceConnectorConfig.STREAMING_FROM to StreamingFrom.NOW.toString(),
+            Neo4jConnectorConfig.SERVER_URI to "$a,$b")
+        val config = Neo4jSourceConnectorConfig(originals)
+
+        assertEquals("$a:7687", config.serverUri[0].toString())
+        assertEquals("$b:7687", config.serverUri[1].toString())
+    }
 }
\ No newline at end of file