diff --git a/direct/src/dist/FreezeTool.py b/direct/src/dist/FreezeTool.py
index 6b5988340e..2001c42d72 100644
--- a/direct/src/dist/FreezeTool.py
+++ b/direct/src/dist/FreezeTool.py
@@ -997,7 +997,7 @@ class Freezer:
 
             if modules == None:
                 # It's actually a regular module.
-                mdef[newParentName] = self.ModuleDef(
+                mdefs[newParentName] = self.ModuleDef(
                     parentName, implicit = implicit, guess = guess,
                     fromSource = fromSource, text = text)