diff --git a/lib/igt_kms.c b/lib/igt_kms.c
index ef24a496..7557bdc2 100644
--- a/lib/igt_kms.c
+++ b/lib/igt_kms.c
@@ -402,10 +402,10 @@ int kmstest_get_pipe_from_crtc_id(int fd, int crtc_id)
 			break;
 	}
 
-	drmModeFreeResources(res);
-
 	igt_assert(i < res->count_crtcs);
 
+	drmModeFreeResources(res);
+
 	return i;
 }