diff --git a/ubuntu-20.04/init.sh b/ubuntu-20.04/init.sh
index 9200e75..bcced01 100644
--- a/ubuntu-20.04/init.sh
+++ b/ubuntu-20.04/init.sh
@@ -9,7 +9,7 @@ showHelp() {
 	echo "init.sh"
 	echo ""
 	echo "use :"
-	echo "sh init.sh [options]"
+	echo "bash init.sh [options]"
 	echo " -b | --base-url url"
 }
 
diff --git a/ubuntu.sh b/ubuntu.sh
index 8db599d..143d8d5 100644
--- a/ubuntu.sh
+++ b/ubuntu.sh
@@ -7,7 +7,7 @@ showHelp() {
 	echo "ubuntu.sh"
 	echo ""
 	echo "use :"
-	echo "sh ubuntu.sh [options]"
+	echo "bash ubuntu.sh [options]"
 	echo " -b | --base-url url"
 }
 
@@ -16,7 +16,7 @@ main() {
 	apt update -y
 	apt install -y wget
 	wget -O /tmp/init.sh "${BASE_URL}"/ubuntu-"${UBUNTUVER}"/init.sh
-	sh /tmp/init.sh -b "${BASE_URL}"
+	bash /tmp/init.sh -b "${BASE_URL}"
 	rm /tmp/init.sh
 }