1 files changed, 3 insertions, 1 deletions

diff --git a/gcd.sh b/gcd.sh
index 9548b1d..b956286 100755
--- a/gcd.sh
+++ b/gcd.sh
@@ -16,5 +16,7 @@ gcdn() {
     echo $r
 }
 
-gcdn $*
+if test $# -gt 0 ; then
+  gcdn $*
+fi