diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonClientCodegen.java
index 27cde95798ef..b250f64ae7c9 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonClientCodegen.java
@@ -194,7 +194,7 @@ public void processOpts() {
 
         Boolean generateSourceCodeOnly = false;
         if (additionalProperties.containsKey(CodegenConstants.SOURCECODEONLY_GENERATION)) {
-            generateSourceCodeOnly = true;
+            generateSourceCodeOnly = Boolean.valueOf(additionalProperties.get(CodegenConstants.SOURCECODEONLY_GENERATION).toString());
         }
 
         additionalProperties.put(CodegenConstants.PROJECT_NAME, projectName);