diff --git a/Lib/subprocess.py b/Lib/subprocess.py
index 99bca47..c691ad8 100644
--- a/Lib/subprocess.py
+++ b/Lib/subprocess.py
@@ -1306,7 +1306,7 @@ class Popen(object):
 
                 try:
                     exception_name, hex_errno, err_msg = (
-                            errpipe_data.split(b':', 2))
+                            errpipe_data.split(b':', 1))
                 except ValueError:
                     exception_name = b'SubprocessError'
                     hex_errno = b'0'