test/run | 1 +

diff --git a/test/run b/test/run
index 93382d17ccd70e25943cc2829b5e5887dcde881a..1f921e7a1b7cf21e77161c73a20d3371cd8a8c72 100755
--- a/test/run
+++ b/test/run
@@ -29,6 +29,7 @@ export G=${A}g
 export L=${A}l
 export GOTRACEBACK=0
 export LANG=C
+unset GREP_OPTIONS	# in case user has a non-standard set
 
 failed=0