diff --git a/scripts/timer.js b/scripts/timer.js
index 47fb280a9..894310d6f 100755
--- a/scripts/timer.js
+++ b/scripts/timer.js
@@ -6,8 +6,12 @@ var fs = require('fs');
 var name = process.argv[2];
 var cmd = process.argv.slice(3).join(' ');
 var start = Date.now();
-exec(cmd, (err) => {
-    if (err) return console.log(err);
+exec(cmd, (err, stdout, stderr) => {
+    if (err) {
+        console.log(stdout);
+        console.log(stderr);
+        return process.exit(err.code);
+    }
     var stop = +new Date();
     var time = (stop - start) / 1000.;
     fs.appendFileSync('/tmp/osrm.timings', `${name}\t${time}`, 'utf-8');