diff --git a/scripts/_common.sh b/scripts/_common.sh
index 485d870..b493918 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -5,7 +5,7 @@
 #=================================================
 java_version=17
 
-mongo_version=5.0
+mongo_version=4.4
 
 # Java dependencies used by the app will be installed through the Java helper
 pkg_dependencies=""
diff --git a/scripts/ynh_mongo_db__2 b/scripts/ynh_mongo_db__2
index 574d54f..c475ef2 100644
--- a/scripts/ynh_mongo_db__2
+++ b/scripts/ynh_mongo_db__2
@@ -316,9 +316,8 @@ ynh_install_mongo() {
 	# Install the version that works with the host cpu (see https://docs.mongodb.com/manual/administration/production-notes/#x86_64)
 	local mongo_debian_release=$(ynh_get_debian_release)
 
-	if [[ $(cat /proc/cpuinfo) != *"avx"* && "$mongo_debian_release" != "buster" ]]; then
-    mongo_debian_release="buster"
-    ynh_print_warn --message="Installing Mongo buster version to support your cpu."
+	if [[ $(cat /proc/cpuinfo) != *"avx"* && "$mongo_version" != "4.4" ]]; then
+    ynh_print_error --message="The version of Mongo you're trying to install may not be compatible with your cpu (Missing avx instruction set)."
   fi
 
 	ynh_install_extra_app_dependencies --repo="deb http://repo.mongodb.org/apt/debian $mongo_debian_release/mongodb-org/$mongo_version main" --package="mongodb-org mongodb-org-server mongodb-org-tools mongodb-mongosh" --key="https://www.mongodb.org/static/pgp/server-$mongo_version.asc"