diff --git a/src/util/set.c b/src/util/set.c
index 2e3cb92cb00..db244669185 100644
--- a/src/util/set.c
+++ b/src/util/set.c
@@ -174,7 +174,7 @@ key_u32_equals(const void *a, const void *b)
 struct set *
 _mesa_set_create_u32_keys(void *mem_ctx)
 {
-   return _mesa_set_create(NULL, key_u32_hash, key_u32_equals);
+   return _mesa_set_create(mem_ctx, key_u32_hash, key_u32_equals);
 }
 
 struct set *