diff --git a/dim b/dim
index 33bef4f51afa13b0c54321b19e8e394be158b9f5..238d9f10b6de8c132fcafbdccad67ebfb242e814 100755
--- a/dim
+++ b/dim
@@ -37,7 +37,7 @@
 #   dinq/dif merge.
 
 # fail on any goof-up
-set -eu
+set -e
 
 #
 # User configuration. Set in environment or configuration file. See