diff --git a/tests/test-merge6 b/tests/test-merge6
--- a/tests/test-merge6
+++ b/tests/test-merge6
@@ -1,11 +1,11 @@
-#!/bin/sh -x
+#!/bin/sh
 
 cat <<'EOF' > merge
 #!/bin/sh
 echo merging for `basename $1`
 EOF
 chmod +x merge
-export HGMERGE=./merge
+HGMERGE=./merge; export HGMERGE
 
 mkdir A1
 cd A1