diff --git a/installer/installer.sh b/installer/installer.sh
index 4598c57..eb88e29 100755
--- a/installer/installer.sh
+++ b/installer/installer.sh
@@ -9,6 +9,14 @@
 ## $5 -> Is a "various-sentence command"? (1 -> First / Not lastest, 2 -> Last  )
 function comm {
 	local command
+	local multic
+	# Do not permit that $5 is empty. For multicommand/multisentence checks
+	if [[ -z "$5" ]];then
+		multic="0"
+	else
+		multic=$5
+	fi
+	
 	# First complete the command, if necessary
 	if [[ $3 == "chroot" ]];then
 		command="chroot /mnt /bin/bash -c \"$4\""
@@ -31,10 +39,10 @@ function comm {
 	fi
 	
 	# Update multiSentence var
-	if [[ $5 == "1" ]];then
+	if [[ $multic == "1" ]];then
 		multiSentence="1"
 	fi
-	if [[ $5 == "2" ]];then
+	if [[ $multic == "2" ]];then
 		multiSentence="0"
 	fi
 	
@@ -44,7 +52,7 @@ function comm {
 	echo "[ ERROR ] $1" >> /tmp/install.log
 	fi
 	
-	if [ $? == "0" ] && [ $5 != "1" ];then
+	if [ $? == "0" ] && [ $multic != "1" ];then
 		echo "[ OK ] $1"
 		echo "[ OK ] $1" >> /tmp/install.log
 	fi