diff --git a/leetcode/14.py b/leetcode/14.py
index 6e02e8a..5aa93e9 100644
--- a/leetcode/14.py
+++ b/leetcode/14.py
@@ -10,10 +10,10 @@ class Solution:
             try:
                 for string in strs:
                     if string[i] != strs[0][i]:
-                        break
+                        return return_string
                 return_string += strs[0][i]
                 i += 1
             except:
-                break
+                return return_string
 
         return return_string