diff --git a/src/tests/x11-test.sh b/src/tests/x11-test.sh
index d95b2460f..c826a00f7 100755
--- a/src/tests/x11-test.sh
+++ b/src/tests/x11-test.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-set -e
+set -ex
 
 MUTTER="$1"
 
@@ -30,8 +30,8 @@ sleep 4
 
 echo \# Replacing existing mutter with a new instance > /dev/stderr
 $MUTTER --x11 --replace --mutter-plugin="$MUTTER_TEST_PLUGIN_PATH" &
-echo \# Launched with pid $MUTTER2_PID
 MUTTER2_PID=$!
+echo \# Launched with pid $MUTTER2_PID
 wait $MUTTER1_PID
 
 echo \# Waiting for the second mutter to finish loading