diff --git a/mbed_lstools/lstools_ubuntu.py b/mbed_lstools/lstools_ubuntu.py
index d77c85c..3af1b81 100644
--- a/mbed_lstools/lstools_ubuntu.py
+++ b/mbed_lstools/lstools_ubuntu.py
@@ -302,7 +302,7 @@ def get_mount_point(self, dev_name, mount_list):
 
         @details
         """
-        mount_media_pattern = "^/[a-zA-Z0-9/]*/" + dev_name  + " on (/[a-zA-Z0-9/]*) "
+        mount_media_pattern = "^/[a-zA-Z0-9/]*/" + dev_name  + " on (/[a-zA-Z0-9_/]*) "
         mmp = re.compile(mount_media_pattern)
         for mount in mount_list:
             m = mmp.search(mount)