diff --git a/opt/ahenk/base/util/util.py b/opt/ahenk/base/util/util.py
index 8b390c3..19f37a1 100644
--- a/opt/ahenk/base/util/util.py
+++ b/opt/ahenk/base/util/util.py
@@ -91,7 +91,7 @@ class Util:
             return content
 
     @staticmethod
-    def write_file(full_path, content, mode='w'):
+    def write_file(full_path, content, mode='w+'):
         file = None
         try:
             file = open(full_path, mode)
@@ -242,4 +242,4 @@ class Util:
 
     @staticmethod
     def generate_uuid():
-        return uuid.uuid4()
+        return str(uuid.uuid4())