diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/config/CodegenConfigurator.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/config/CodegenConfigurator.java
index 96492e5251c7..2e2c7da0b569 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/config/CodegenConfigurator.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/config/CodegenConfigurator.java
@@ -535,7 +535,10 @@ public class CodegenConfigurator implements Serializable {
             }
 
             if (this.isValidateSpec()) {
-                SpecValidationException ex = new SpecValidationException("Specification has failed validation.");
+                StringBuilder sb = new StringBuilder();
+                sb.append("There were issues with the specification. The option can be disabled by passing false to skipValidateSpec (Maven/Gradle) or --skip-validate-spec (CLI).");
+                sb.append(System.lineSeparator());
+                SpecValidationException ex = new SpecValidationException(sb.toString());
                 ex.setErrors(validationMessages);
                 ex.setWarnings(warnings);
                 throw ex;
diff --git a/modules/openapi-generator/src/test/resources/2_0/swift/petstore-with-fake-endpoints-models-for-testing.yaml b/modules/openapi-generator/src/test/resources/2_0/swift/petstore-with-fake-endpoints-models-for-testing.yaml
index c7205a8e0ea7..2bc345dab4ed 100644
--- a/modules/openapi-generator/src/test/resources/2_0/swift/petstore-with-fake-endpoints-models-for-testing.yaml
+++ b/modules/openapi-generator/src/test/resources/2_0/swift/petstore-with-fake-endpoints-models-for-testing.yaml
@@ -556,7 +556,7 @@ paths:
       tags:
         - "fake_classname_tags 123#$%^"
       summary: To test class name in snake case
-      descriptions: To test class name in snake case
+      description: To test class name in snake case
       operationId: testClassname
       consumes:
         - application/json