diff --git a/src/mesa/program/hash_table.h b/src/mesa/program/hash_table.h
index e85a836a00b..d0a2abffa34 100644
--- a/src/mesa/program/hash_table.h
+++ b/src/mesa/program/hash_table.h
@@ -249,6 +249,7 @@ public:
       wrapper->closure = closure;
 
       hash_table_call_foreach(this->ht, subtract_one_wrapper, wrapper);
+      free(wrapper);
    }
 
    /**