diff --git a/check_http_json.py b/check_http_json.py
index 4781abd..5256639 100755
--- a/check_http_json.py
+++ b/check_http_json.py
@@ -152,7 +152,7 @@ class JsonHelper:
         (Element.Key.NestedKey). Returns (None, 'not_found') if not found
         """
 
-        if temp_data:
+        if temp_data != '':
             data = temp_data
         else:
             data = self.data