diff --git a/runtime/Python2/src/antlr4/ListTokenSource.py b/runtime/Python2/src/antlr4/ListTokenSource.py
index 5e5e03a02..0675e8507 100644
--- a/runtime/Python2/src/antlr4/ListTokenSource.py
+++ b/runtime/Python2/src/antlr4/ListTokenSource.py
@@ -81,7 +81,7 @@ class ListTokenSource(TokenSource):
             return self.eofToken
         t = self.tokens[self.pos]
         if self.pos == len(self.tokens) - 1 and t.type == Token.EOF:
-            eofToken = t
+            self.eofToken = t
         self.pos += 1
         return t
 
diff --git a/runtime/Python3/src/antlr4/ListTokenSource.py b/runtime/Python3/src/antlr4/ListTokenSource.py
index c0b929a8d..84b86f81a 100644
--- a/runtime/Python3/src/antlr4/ListTokenSource.py
+++ b/runtime/Python3/src/antlr4/ListTokenSource.py
@@ -81,7 +81,7 @@ class ListTokenSource(TokenSource):
             return self.eofToken
         t = self.tokens[self.pos]
         if self.pos == len(self.tokens) - 1 and t.type == Token.EOF:
-            eofToken = t
+            self.eofToken = t
         self.pos += 1
         return t