diff --git a/lib/verify.js b/lib/verify.js
index 47f9c66..e83d189 100644
--- a/lib/verify.js
+++ b/lib/verify.js
@@ -19,7 +19,7 @@ const script = `
   if (modules === 46 || modules === 48) {
     kCpuFeaturesOffset = 0x0c;
   } else {
-    assert(false);
+    assert(false, modules);
   }
 
   if (modules >= 46 && // no cpu_features field in 0.12