diff --git a/tools/metrics.py b/tools/metrics.py
index 5f1560287f..ffc20befef 100755
--- a/tools/metrics.py
+++ b/tools/metrics.py
@@ -78,7 +78,7 @@ def syscmd(*args):
             a2.append(a)
         elif a:
             a2.extend(a)
-    subprocess.run(a2)
+    subprocess.check_call(a2)
 
 
 def parse_port_list(args):