diff --git a/scripts/upgrade b/scripts/upgrade
index dbdf6cb..de82a8c 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -128,7 +128,9 @@ ynh_print_info --message="Stopping a systemd service..."
 
 ynh_systemd_action --service_name=$app --action="stop" --log_path=systemd --line_match="Stopped $app"
 
-pkill -u $app
+if ynh_version_gt "1.1.7~ynh1" "${previous_version}" ; then
+	pkill -u $app
+fi
 
 #=================================================
 # UPGRADE TO OTP RELEASE