diff --git a/exiftool.py b/exiftool.py
index 8a11daa..41ed7ef 100644
--- a/exiftool.py
+++ b/exiftool.py
@@ -55,6 +55,7 @@
 
 from __future__ import unicode_literals
 
+import select
 import sys
 import subprocess
 import os
@@ -223,7 +224,10 @@ def execute(self, *params):
         output = b""
         fd = self._process.stdout.fileno()
         while not output[-32:].strip().endswith(sentinel):
-            output += os.read(fd, block_size)
+        	inputready,outputready,exceptready = select.select([fd],[],[])
+                for i in inputready:
+                        if i == fd:
+                                output += os.read(fd, block_size)
         return output.strip()[:-len(sentinel)]
 
     def execute_json(self, *params):