diff --git a/magik-language-server/src/main/java/nl/ramsolutions/sw/magik/languageserver/MagikTextDocumentService.java b/magik-language-server/src/main/java/nl/ramsolutions/sw/magik/languageserver/MagikTextDocumentService.java
index 5178feba..8a42b1b1 100644
--- a/magik-language-server/src/main/java/nl/ramsolutions/sw/magik/languageserver/MagikTextDocumentService.java
+++ b/magik-language-server/src/main/java/nl/ramsolutions/sw/magik/languageserver/MagikTextDocumentService.java
@@ -300,7 +300,7 @@ public CompletableFuture<Hover> hover(final HoverParams params) {
             LOGGER.debug("Implementations found: {}", locations.size());
 
             final List<Location> lsp4jLocations = locations.stream()
-                .map(location -> Lsp4jConversion.locationToLsp4j(location))
+                .map(Lsp4jConversion::locationToLsp4j)
                 .collect(Collectors.toList());
             return Either.forLeft(lsp4jLocations);
         });
@@ -351,7 +351,7 @@ public CompletableFuture<Either<List<? extends Location>, List<? extends Locatio
             LOGGER.debug("Definitions found: {}", locations.size());
 
             final List<Location> lsp4jLocations = locations.stream()
-                .map(location -> Lsp4jConversion.locationToLsp4j(location))
+                .map(Lsp4jConversion::locationToLsp4j)
                 .collect(Collectors.toList());
             return Either.forLeft(lsp4jLocations);
         });
@@ -370,7 +370,7 @@ public CompletableFuture<List<? extends Location>> references(final ReferencePar
                 this.referencesProvider.provideReferences(magikFile, position);
             LOGGER.debug("References found: {}", locations.size());
             return locations.stream()
-                .map(location -> Lsp4jConversion.locationToLsp4j(location))
+                .map(Lsp4jConversion::locationToLsp4j)
                 .collect(Collectors.toList());
         });
     }
diff --git a/magik-language-server/src/main/java/nl/ramsolutions/sw/magik/languageserver/diagnostics/MagikTypedChecksDiagnosticsProvider.java b/magik-language-server/src/main/java/nl/ramsolutions/sw/magik/languageserver/diagnostics/MagikTypedChecksDiagnosticsProvider.java
index 6de62e7e..cf401f62 100644
--- a/magik-language-server/src/main/java/nl/ramsolutions/sw/magik/languageserver/diagnostics/MagikTypedChecksDiagnosticsProvider.java
+++ b/magik-language-server/src/main/java/nl/ramsolutions/sw/magik/languageserver/diagnostics/MagikTypedChecksDiagnosticsProvider.java
@@ -61,8 +61,7 @@ private Set<MagikTypedCheck> createTypedChecks() {
                     final Set<Parameter> parameters = Collections.emptySet();
                     final MagikCheckHolder holder =
                         new MagikCheckHolder((Class<MagikCheck>) checkClass, parameters, true);
-                    final MagikTypedCheck magikCheck = (MagikTypedCheck) holder.createCheck();
-                    return magikCheck;
+                    return (MagikTypedCheck) holder.createCheck();
                 } catch (final ReflectiveOperationException exception) {
                     LOGGER.error(exception.getMessage(), exception);
                 }
diff --git a/magik-language-server/src/main/java/nl/ramsolutions/sw/magik/languageserver/implementation/ImplementationProvider.java b/magik-language-server/src/main/java/nl/ramsolutions/sw/magik/languageserver/implementation/ImplementationProvider.java
index 8d09e1ed..8732bb40 100644
--- a/magik-language-server/src/main/java/nl/ramsolutions/sw/magik/languageserver/implementation/ImplementationProvider.java
+++ b/magik-language-server/src/main/java/nl/ramsolutions/sw/magik/languageserver/implementation/ImplementationProvider.java
@@ -73,7 +73,7 @@ private List<Location> implementionsForMethod(final MagikTypedFile magikFile, fi
             .filter(anyType -> anyType != type)
             .filter(anyType -> anyType.isKindOf(type))
             .flatMap(anyType -> anyType.getLocalMethods(methodName).stream())
-            .map(method -> method.getLocation())
+            .map(Method::getLocation)
             .filter(Objects::nonNull)
             .collect(Collectors.toList());
     }
diff --git a/magik-language-server/src/test/java/nl/ramsolutions/sw/magik/languageserver/definitions/DefinitionsProviderTest.java b/magik-language-server/src/test/java/nl/ramsolutions/sw/magik/languageserver/definitions/DefinitionsProviderTest.java
index 69b304c5..8efe337b 100644
--- a/magik-language-server/src/test/java/nl/ramsolutions/sw/magik/languageserver/definitions/DefinitionsProviderTest.java
+++ b/magik-language-server/src/test/java/nl/ramsolutions/sw/magik/languageserver/definitions/DefinitionsProviderTest.java
@@ -18,7 +18,7 @@
  * Test DefinitionsProvider.
  */
 @SuppressWarnings("checkstyle:MagicNumber")
-public class DefinitionsProviderTest {
+class DefinitionsProviderTest {
 
     private static final URI TEST_URI = URI.create("tests://unittest");
     private static final Location EMPTY_LOCATION = new Location(
diff --git a/magik-language-server/src/test/java/nl/ramsolutions/sw/magik/languageserver/selectionrange/SelectionRangeProviderTest.java b/magik-language-server/src/test/java/nl/ramsolutions/sw/magik/languageserver/selectionrange/SelectionRangeProviderTest.java
index e95fad7e..1f218baa 100644
--- a/magik-language-server/src/test/java/nl/ramsolutions/sw/magik/languageserver/selectionrange/SelectionRangeProviderTest.java
+++ b/magik-language-server/src/test/java/nl/ramsolutions/sw/magik/languageserver/selectionrange/SelectionRangeProviderTest.java
@@ -16,7 +16,7 @@
  * Test SelectionRangeProvider.
  */
 @SuppressWarnings("checkstyle:MagicNumber")
-public class SelectionRangeProviderTest {
+class SelectionRangeProviderTest {
 
     private List<SelectionRange> getSelectionRanges(
             final String code,
diff --git a/magik-lint/src/main/java/nl/ramsolutions/sw/magik/lint/MagikLint.java b/magik-lint/src/main/java/nl/ramsolutions/sw/magik/lint/MagikLint.java
index 2f3dde9e..93b24c30 100644
--- a/magik-lint/src/main/java/nl/ramsolutions/sw/magik/lint/MagikLint.java
+++ b/magik-lint/src/main/java/nl/ramsolutions/sw/magik/lint/MagikLint.java
@@ -260,7 +260,9 @@ public void run(final MagikFile magikFile) throws ReflectiveOperationException,
         final URI uri = magikFile.getUri();
         final Path magikFilePath = Path.of(uri);
         final Path configPath = ConfigurationLocator.locateConfiguration(magikFilePath);
-        final MagikChecksConfiguration checksConfig = new MagikChecksConfiguration(configPath);
+        final MagikChecksConfiguration checksConfig = configPath != null
+            ? new MagikChecksConfiguration(configPath)
+            : new MagikChecksConfiguration();
         final Iterable<MagikCheckHolder> holders = checksConfig.getAllChecks();
         final Comparator<MagikIssue> byLine = Comparator.comparing(MagikIssue::startLine);
         final Comparator<MagikIssue> byColumn = Comparator.comparing(MagikIssue::startColumn);
diff --git a/magik-squid/src/main/java/nl/ramsolutions/sw/MagikToolsProperties.java b/magik-squid/src/main/java/nl/ramsolutions/sw/MagikToolsProperties.java
index 177befb9..86d1295a 100644
--- a/magik-squid/src/main/java/nl/ramsolutions/sw/MagikToolsProperties.java
+++ b/magik-squid/src/main/java/nl/ramsolutions/sw/MagikToolsProperties.java
@@ -1,7 +1,6 @@
 package nl.ramsolutions.sw;
 
 import java.io.FileInputStream;
-import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.file.Path;
@@ -31,7 +30,7 @@ public MagikToolsProperties() throws IOException {
         LOGGER.debug("Read default configuration from: {}", DEFAULT_PROPERTIES_FILENAME);
     }
 
-    public MagikToolsProperties(final Path path) throws FileNotFoundException, IOException {
+    public MagikToolsProperties(final Path path) throws IOException {
         this(new FileInputStream(path.toFile()));
         LOGGER.debug("Read configuration from: {}", path.toAbsolutePath());
     }