diff --git a/data/installed-tests/fwupdmgr.sh b/data/installed-tests/fwupdmgr.sh
index 39b8a1b06..e3f7ee31b 100755
--- a/data/installed-tests/fwupdmgr.sh
+++ b/data/installed-tests/fwupdmgr.sh
@@ -1,7 +1,6 @@
 #!/bin/bash
 
 exec 2>&1
-dirname=`dirname $0`
 device=08d460be0f1f9f128413f816022a6439e0078018
 
 error()