diff --git a/scripts/glibc_check.py b/scripts/glibc_check.py
old mode 100644
new mode 100755
index a400bbd1d..02be4aac4
--- a/scripts/glibc_check.py
+++ b/scripts/glibc_check.py
@@ -2,7 +2,9 @@
 """
 Check if all given binaries work with the given glibc version.
 
-check_glibc.py 2.11 bin [bin ...]
+glibc_check.py 2.11 bin [bin ...]
+
+rc = 0 means "yes", rc = 1 means "no".
 """
 
 import re