diff --git a/Python/ceval.c b/Python/ceval.c
index 3d7bed0111b..128ec2c0045 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -3525,7 +3525,7 @@ fast_yield:
                                 tstate, f,
                                 PyTrace_RETURN, retval)) {
                 Py_CLEAR(retval);
-                /* why = WHY_EXCEPTION; */
+                /* why = WHY_EXCEPTION; useless yet but cause compiler warnings */
             }
         }
     }