diff --git a/ors-api/src/main/java/org/heigit/ors/api/controllers/RoutingAPI.java b/ors-api/src/main/java/org/heigit/ors/api/controllers/RoutingAPI.java
index d7b8916e77..f02eef33cd 100644
--- a/ors-api/src/main/java/org/heigit/ors/api/controllers/RoutingAPI.java
+++ b/ors-api/src/main/java/org/heigit/ors/api/controllers/RoutingAPI.java
@@ -21,7 +21,6 @@
 import com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
-import io.swagger.v3.oas.annotations.media.ArraySchema;
 import io.swagger.v3.oas.annotations.media.Content;
 import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
@@ -48,7 +47,7 @@
 
 import javax.servlet.http.HttpServletResponse;
 
-    @RestController
+@RestController
 @Tag(name = "Directions Service", description = "Get directions for different modes of transport")
 @RequestMapping("/v2/directions")
 @ApiResponse(responseCode = "400", description = "The request is incorrect and therefore can not be processed.")
@@ -214,16 +213,16 @@ public ResponseEntity<Object> handleMissingParams(final MissingServletRequestPar
     @ExceptionHandler({HttpMessageNotReadableException.class, ConversionFailedException.class, HttpMessageConversionException.class, Exception.class})
     public ResponseEntity<Object> handleReadingBodyException(final Exception e) {
         final Throwable cause = e.getCause();
-        if (cause instanceof UnrecognizedPropertyException) {
-            return errorHandler.handleUnknownParameterException(new UnknownParameterException(RoutingErrorCodes.UNKNOWN_PARAMETER, ((UnrecognizedPropertyException) cause).getPropertyName()));
-        } else if (cause instanceof InvalidFormatException) {
-            return errorHandler.handleStatusCodeException(new ParameterValueException(RoutingErrorCodes.INVALID_PARAMETER_FORMAT, "" + ((InvalidFormatException) cause).getValue()));
-        } else if (cause instanceof ConversionFailedException) {
-            return errorHandler.handleStatusCodeException(new ParameterValueException(RoutingErrorCodes.INVALID_PARAMETER_VALUE, "" + ((ConversionFailedException) cause).getValue()));
-        } else if (cause instanceof InvalidDefinitionException) {
-            return errorHandler.handleStatusCodeException(new ParameterValueException(RoutingErrorCodes.INVALID_PARAMETER_VALUE, ((InvalidDefinitionException) cause).getPath().get(0).getFieldName()));
-        } else if (cause instanceof MismatchedInputException) {
-            return errorHandler.handleStatusCodeException(new ParameterValueException(RoutingErrorCodes.INVALID_PARAMETER_FORMAT, ((MismatchedInputException) cause).getPath().get(0).getFieldName()));
+        if (cause instanceof UnrecognizedPropertyException exception) {
+            return errorHandler.handleUnknownParameterException(new UnknownParameterException(RoutingErrorCodes.UNKNOWN_PARAMETER, exception.getPropertyName()));
+        } else if (cause instanceof InvalidFormatException exception) {
+            return errorHandler.handleStatusCodeException(new ParameterValueException(RoutingErrorCodes.INVALID_PARAMETER_FORMAT, "" + exception.getValue()));
+        } else if (cause instanceof ConversionFailedException exception) {
+            return errorHandler.handleStatusCodeException(new ParameterValueException(RoutingErrorCodes.INVALID_PARAMETER_VALUE, "" + exception.getValue()));
+        } else if (cause instanceof InvalidDefinitionException exception) {
+            return errorHandler.handleStatusCodeException(new ParameterValueException(RoutingErrorCodes.INVALID_PARAMETER_VALUE, exception.getPath().get(0).getFieldName()));
+        } else if (cause instanceof MismatchedInputException exception) {
+            return errorHandler.handleStatusCodeException(new ParameterValueException(RoutingErrorCodes.INVALID_PARAMETER_FORMAT, exception.getPath().get(0).getFieldName()));
         } else {
             // Check if we are missing the body as a whole
             if (e.getLocalizedMessage().startsWith("Required request body is missing")) {