diff --git a/library/system/mount b/library/system/mount
index 9d5cdd8b06b..48b03f554ed 100755
--- a/library/system/mount
+++ b/library/system/mount
@@ -244,7 +244,7 @@ def main():
             dump   = dict(default=None),
             src    = dict(required=True),
             fstype = dict(required=True),
-            fstab  = dict(default=None)
+            fstab  = dict(default='/etc/fstab')
         )
     )