diff --git a/aider/versioncheck.py b/aider/versioncheck.py
index 158db37b9..e9a5f7146 100644
--- a/aider/versioncheck.py
+++ b/aider/versioncheck.py
@@ -41,7 +41,6 @@ def check_version(io, just_check=False):
         fname.parent.mkdir(parents=True, exist_ok=True)
         fname.touch()
 
-    is_update_available = True
     if just_check:
         if is_update_available:
             io.tool_output("Update available")