diff --git a/configure.py b/configure.py
index e98801f2279f6b..008056de087501 100755
--- a/configure.py
+++ b/configure.py
@@ -579,7 +579,7 @@
 parser.add_option('--enable-asan',
     action='store_true',
     dest='enable_asan',
-    help='build with asan')
+    help='compile for Address Sanitizer to find memory bugs')
 
 parser.add_option('--enable-static',
     action='store_true',