diff --git a/modules/extensions.py b/modules/extensions.py
index 9f11c882..defc0d66 100644
--- a/modules/extensions.py
+++ b/modules/extensions.py
@@ -37,6 +37,7 @@ def apply_extensions(text, typ):
     return text
 
 def create_extensions_block():
+    global setup_called
     # Updating the default values
     for extension, name in iterator():
         if hasattr(extension, 'params'):