diff --git a/generator/ctrl/ctrl_generator.py b/generator/ctrl/ctrl_generator.py
index 71a98d0..24d6ce4 100644
--- a/generator/ctrl/ctrl_generator.py
+++ b/generator/ctrl/ctrl_generator.py
@@ -178,7 +178,7 @@ class CTRLGenerator():
         print(repr(result))
 
         if not first_letter_capitalized:
-            result[0] = result[0].lower()
+            result = result[0].upper() + result[1:]
 
         return result