diff --git a/data_from_portwine/scripts/functions_helper b/data_from_portwine/scripts/functions_helper
index a7e74ebf..78c998df 100755
--- a/data_from_portwine/scripts/functions_helper
+++ b/data_from_portwine/scripts/functions_helper
@@ -431,8 +431,9 @@ export -f try_remove_dir
 
 create_new_dir () {
     if [[ ! -d "$1" ]] ; then
-        mkdir -p "$1" && return 0
+        mkdir -p "$1" || return 1
     fi
+    return 0
 }
 
 try_force_link_file () {