diff --git a/inc/certs.inc b/inc/certs.inc
index 60db353e..09d15176 100755
--- a/inc/certs.inc
+++ b/inc/certs.inc
@@ -672,7 +672,7 @@ COPYCERTS(){
 	
 	i=0
 	for CERTSITE in "${COPYCERTS[@]}"; do
-		c=0; spc=''; until [ $c = $(expr 40 - ${#CERTSITE}) ]; do spc="${spc} "; c=$(expr $c + 1); done
+		c=0; spc=''; until [ $c = $(expr 40 - ${#CERTSITE}) ]; do spc="${spc} "; c=((c+1)); done
 		echo -en "${idsCL[LightCyan]}Updating ${idsCL[Green]}${CERTSITE} ${idsCL[LightCyan]}...${spc}"
 		COPYTO=${CERTFOLDERS[${i}]}
 		NCF=false