diff --git a/configs/common/Options.py b/configs/common/Options.py
index 9413283f1..c625ab179 100644
--- a/configs/common/Options.py
+++ b/configs/common/Options.py
@@ -178,4 +178,4 @@ def addFSOptions(parser):
 
     # Memory Size Options
     parser.add_option("--mem-size", action="store", type="string", default=None,
-                      help="Path to the disk image to use.")
+                      help="Specify the physical memory size (single memory)")