diff --git a/tool/btstack_event_generator.py b/tool/btstack_event_generator.py
index 3cee47d0d..34dfe47d1 100755
--- a/tool/btstack_event_generator.py
+++ b/tool/btstack_event_generator.py
@@ -145,7 +145,7 @@ c_prototoype_struct_return = '''/**
  * @note: btstack_type {format}
  */
 static inline void {fn_name}(const uint8_t * event, {result_type} {result_name}){{
-    {code}    
+    {code}
 }}
 '''