diff --git a/src/gallium/tests/unit/u_cache_test.c b/src/gallium/tests/unit/u_cache_test.c
index cf8f70ba5a0..16fb1b8652e 100644
--- a/src/gallium/tests/unit/u_cache_test.c
+++ b/src/gallium/tests/unit/u_cache_test.c
@@ -89,6 +89,7 @@ int main() {
          *key = 0xdeadbeef;
          value_out = (cache_test_value *) util_cache_get(cache, key);
          assert(value_out == NULL);
+         (void)value_out;
          free(key);