diff --git a/src/main/java/io/swagger/codegen/v3/generators/DefaultCodegenConfig.java b/src/main/java/io/swagger/codegen/v3/generators/DefaultCodegenConfig.java
index 9542e0231e..64dcfc159d 100644
--- a/src/main/java/io/swagger/codegen/v3/generators/DefaultCodegenConfig.java
+++ b/src/main/java/io/swagger/codegen/v3/generators/DefaultCodegenConfig.java
@@ -3765,6 +3765,10 @@ protected void configureDataForTestTemplate(CodegenOperation codegenOperation) {
                         .findFirst()
                         .get();
 
+                if (codegenParameter.testExample == null) {
+                    return;
+                }
+
                 path = path.replace(pathParam, codegenParameter.testExample);
             }
         }