diff --git a/data/helpers.d/filesystem b/data/helpers.d/filesystem
index c07de2ec..badc0e99 100644
--- a/data/helpers.d/filesystem
+++ b/data/helpers.d/filesystem
@@ -60,8 +60,16 @@ ynh_backup() {
     # ==============================================================================
     # Be sure the source path is not empty
     [[ -e "${SRC_PATH}" ]] || {
-        echo "Source path '${SRC_PATH}' does not exist" >&2
-        return 1
+        echo "!!! Source path '${SRC_PATH}' does not exist !!!" >&2
+	
+        # This is a temporary fix for fail2ban config files missing after the migration to stretch.
+        if echo "${SRC_PATH}" | grep --quiet "/etc/fail2ban"
+        then
+		touch "${SRC_PATH}"
+		echo "The missing file will be replaced by a dummy one for the backup !!!" >&2
+        else
+                return 1
+        fi
     }
 
     # Transform the source path as an absolute path