diff --git a/zeropad b/zeropad
index cff9d462e280d32452323742032ab65350452863..96864851972ac3af82a71a20dd4ab7894bb524b6 100755
--- a/zeropad
+++ b/zeropad
@@ -20,7 +20,7 @@ exit
 [ "$2" = "" ] && Usage
 
 
-i=`echo $1 | wc -m`;
+i=`echo $1 | wc -c`;
 j=0;
 k=` expr $2 - $i`;
 k=` expr $k + 1`;
@@ -29,4 +29,4 @@ while [ "$j" -lt "$k" ];do
 num=0$num;
 j=` expr $j + 1`
 done
-echo $num
\ No newline at end of file
+echo $num