diff --git a/s/runtests b/s/runtests
index 23430be3d..159ca8d82 100755
--- a/s/runtests
+++ b/s/runtests
@@ -1,5 +1,5 @@
 #!/bin/bash
-set -ex
+set -e
 
 ROOT=$(git rev-parse --show-toplevel)
 export LUA_PATH="$ROOT/scripts/?.lua;$LUA_PATH"