diff --git a/tools/xm-test/tests/network-attach/network_utils.py b/tools/xm-test/tests/network-attach/network_utils.py
index a1ccdf6ac4..16c521b43a 100644
--- a/tools/xm-test/tests/network-attach/network_utils.py
+++ b/tools/xm-test/tests/network-attach/network_utils.py
@@ -10,7 +10,7 @@ def count_eth(console):
         run = console.runCmd("ifconfig -a | grep eth")
     except ConsoleError, e:
         FAIL(str(e))
-    return = len(run['output'].splitlines())
+    return len(run['output'].splitlines())
 
 def network_attach(domain_name, console):
     eths_before = count_eth(console)