diff --git a/src/strands/tools/registry.py b/src/strands/tools/registry.py
index 0660337a2..899f6af6c 100644
--- a/src/strands/tools/registry.py
+++ b/src/strands/tools/registry.py
@@ -202,7 +202,7 @@ def register_tool(self, tool: AgentTool) -> None:
 
             matching_tools = [
                 tool_name
-                for (tool_name, tool) in self.registry.items()
+                for (tool_name, _) in self.registry.items()
                 if tool_name.replace("-", "_") == normalized_name
             ]