diff --git a/facalc b/facalc
index bafce89fb55ed54021ccc7c95c84b0f3a8663790..ccb36e619a22d8b18f6905f3bb3ab3940aa8e00e 100755
--- a/facalc
+++ b/facalc
@@ -8,6 +8,7 @@ echo ""
 echo "Usage: facalc basename outbase"
 echo "e.g. facalc dti test"
 echo "will write test_FA instead of dti_FA"
+exit
 fi
 
 bn=$1