diff --git a/C/flint-1/metadata.json b/C/flint-1/metadata.json
index d621c0a4e..b1ac69b8b 100644
--- a/C/flint-1/metadata.json
+++ b/C/flint-1/metadata.json
@@ -5,7 +5,7 @@
     "buggyPath": "buggy",
     "referencePath": null,
 
-    "buildCommand": "make",
+    "buildCommand": "make -j`nproc`",
     "testCommand": null,
 
     "categories": ["safety", "resource-leak"]