diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonAbstractConnexionServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonAbstractConnexionServerCodegen.java
index 8bc5d2b4e8e..e3e9d4ebf65 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonAbstractConnexionServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonAbstractConnexionServerCodegen.java
@@ -201,10 +201,10 @@ public class PythonAbstractConnexionServerCodegen extends DefaultCodegen impleme
         }
         supportingFiles.add(new SupportingFile("__main__.mustache", packagePath(), "__main__.py"));
         supportingFiles.add(new SupportingFile("util.mustache", packagePath(), "util.py"));
-        supportingFiles.add(new SupportingFile("__init__.mustache", packagePath() + File.separatorChar + controllerPackage, "__init__.py"));
-        supportingFiles.add(new SupportingFile("security_controller_.mustache", packagePath() + File.separatorChar + controllerPackage, "security_controller_.py"));
-        supportingFiles.add(new SupportingFile("__init__model.mustache", packagePath() + File.separatorChar + modelPackage, "__init__.py"));
-        supportingFiles.add(new SupportingFile("base_model_.mustache", packagePath() + File.separatorChar + modelPackage, "base_model_.py"));
+        supportingFiles.add(new SupportingFile("__init__.mustache", packagePath() + File.separatorChar + packageToPath(controllerPackage), "__init__.py"));
+        supportingFiles.add(new SupportingFile("security_controller_.mustache", packagePath() + File.separatorChar + packageToPath(controllerPackage), "security_controller_.py"));
+        supportingFiles.add(new SupportingFile("__init__model.mustache", packagePath() + File.separatorChar + packageToPath(modelPackage), "__init__.py"));
+        supportingFiles.add(new SupportingFile("base_model_.mustache", packagePath() + File.separatorChar + packageToPath(modelPackage), "base_model_.py"));
         supportingFiles.add(new SupportingFile("openapi.mustache", packagePath() + File.separatorChar + "openapi", "openapi.yaml"));
         addSupportingFiles();
 
@@ -212,6 +212,10 @@ public class PythonAbstractConnexionServerCodegen extends DefaultCodegen impleme
         controllerPackage = packageName + "." + controllerPackage;
     }
 
+    private static String packageToPath(String pkg) {
+        return pkg.replace(".", File.separator);
+    }
+
     private static String dropDots(String str) {
         return str.replaceAll("\\.", "_");
     }