diff --git a/bin/buildiso.in b/bin/buildiso.in
index 8f464cb..4d5d2d7 100755
--- a/bin/buildiso.in
+++ b/bin/buildiso.in
@@ -82,6 +82,7 @@ display_settings(){
 	msg2 "arch: ${arch}"
 	msg2 "branch: ${branch}"
 	msg2 "chroots_iso: ${chroots_iso}"
+	msg2 "custom repo to keep: ${keep_repo}"
 
 	msg "ARGS:"
 	msg2 "clean_first: ${clean_first}"
@@ -119,8 +120,6 @@ load_config "${USER_CONFIG}/manjaro-tools.conf"
 load_config "${SYSCONFDIR}/manjaro-tools.conf"
 
 clean_first=true
-clean_cache_xorg=true
-clean_cache_lng=true
 clean_cache_iso=true
 
 pretend=false
@@ -135,6 +134,7 @@ usage() {
 	echo "    -a <arch>          Arch [default: ${arch}]"
 	echo "    -b <branch>        Branch [default: ${branch}]"
 	echo '    -r <dir>           Chroots directory'
+	echo '    -k <repo>          Custom pacman repo to keep'
 	echo "                       [default: ${chroots_iso}]"
 	echo '    -w                 Disable clean iso cache'
 	echo '    -c                 Disable clean work dir'
@@ -152,7 +152,7 @@ usage() {
 
 orig_argv=("$@")
 
-opts='p:a:b:r:cxlisqwLh'
+opts='p:a:b:r:k:cxlisqwLh'
 
 while getopts "${opts}" arg; do
 	case "${arg}" in
@@ -160,6 +160,7 @@ while getopts "${opts}" arg; do
 		a) arch="$OPTARG" ;;
 		b) branch="$OPTARG" ;;
 		r) chroots_iso="$OPTARG" ;;
+		k) keep_repo="$OPTARG" ;;
 		c) clean_first=false ;;
 		w) clean_cache_iso=false;;
 		x) clean_cache_xorg=false ;;
diff --git a/conf/manjaro-tools.conf b/conf/manjaro-tools.conf
index c20214e..2130a7c 100644
--- a/conf/manjaro-tools.conf
+++ b/conf/manjaro-tools.conf
@@ -53,6 +53,15 @@
 # default iso buildset; name without .set extension
 # buildset_iso=default
 
+# clean xorg cache before building
+# clean_cache_xorg=true
+
+# clean lng cache before building
+# clean_cache_lng=true
+
+# custom pacman repo to keep
+# keep_repo=""
+
 # unset defaults to given value
 # dist_name="Manjaro"
 
diff --git a/lib/util-iso.sh b/lib/util-iso.sh
index 3ed6ae5..fdd3489 100644
--- a/lib/util-iso.sh
+++ b/lib/util-iso.sh
@@ -525,6 +525,36 @@ compress_images(){
 	msg3 "Time ${FUNCNAME}: $(elapsed_time ${timer}) minutes"
 }
 
+clean_pacman_conf(){
+	# set default values
+	REPOS=()
+	flag=0
+	# Get repos from pacman_conf
+	# sed is being used for removing comments and repo brackets []
+	REPOS=($(grep "\[*\]" "$pacman_conf" | sed -e '/^\s*#/d' -e 's/\[//' -e 's/\]//'))
+	# Set valid repos
+	if [[ $arch = x86_64 ]]; then
+		VALID=('options' 'core' 'extra' 'community' 'multilib')
+	else
+		VALID=('options' 'core' 'extra' 'community')
+	fi
+	# Remove extra repos from pacman.conf
+	for repo in "${REPOS[@]}"; do
+		if [[ ! $(echo "${VALID[*]}" | grep "$repo") ]] && [[ ! $(echo "$keep_repo" | grep "$repo") ]]; then
+			# Remove custom repo
+			for file in $work_dir/{livecd,root,$custom}-image/etc/pacman.conf; do
+				if [[ -f $file ]]; then
+					msg2 "Editing $file"
+					sed -i "/^\[$repo/,/^Server/d" "$file" && flag=1 || return 1
+				fi
+			done
+			if [[ $flag -eq 1 ]]; then
+			       msg "Custom repo $repo removed from pacman.conf"
+			fi
+		fi
+	done
+}
+
 build_images(){
 	local timer=$(get_timer)
 	load_pkgs "Packages"
@@ -599,10 +629,12 @@ make_profile(){
 		fi
 		if ${images_only}; then
 			build_images
+			clean_pacman_conf
 			warning "Continue compress: buildiso -p ${buildset_iso} -sc ..."
 			exit 1
 		else
 			build_images
+			clean_pacman_conf
 			compress_images
 		fi
 	cd ..
diff --git a/lib/util.sh b/lib/util.sh
index 81cccc8..9099d0a 100644
--- a/lib/util.sh
+++ b/lib/util.sh
@@ -258,6 +258,14 @@ load_config(){
 		buildset_iso='default'
 	fi
 
+	if [[ -z ${clean_cache_xorg} ]];then
+		clean_cache_xorg='true'
+	fi
+
+	if [[ -z ${clean_cache_lng} ]];then
+		clean_cache_lng='true'
+	fi
+
 	##### iso settings #####
 
 	if [[ -z ${dist_release} ]];then