diff --git a/cloud/docker/docker.py b/cloud/docker/docker.py
index 49e11f3caa0..344c46dd31d 100644
--- a/cloud/docker/docker.py
+++ b/cloud/docker/docker.py
@@ -528,7 +528,7 @@ class DockerManager(object):
             self.lxc_conf = []
             options = self.module.params.get('lxc_conf')
             for option in options:
-                parts = option.split(':')
+                parts = option.split(':', 1)
                 self.lxc_conf.append({"Key": parts[0], "Value": parts[1]})
 
         self.exposed_ports = None