diff --git a/libc/stdio/fmemopen.cpp b/libc/stdio/fmemopen.cpp
index 6e333ba..c58fca9 100644
--- a/libc/stdio/fmemopen.cpp
+++ b/libc/stdio/fmemopen.cpp
@@ -34,7 +34,7 @@
 #include "local.h"
 
 // See http://pubs.opengroup.org/onlinepubs/9699919799/functions/fmemopen.html
-// and http://man7.org/linux/man-pages/man3/fmemopen.3.html for documentation.
+// and https://man7.org/linux/man-pages/man3/fmemopen.3.html for documentation.
 
 struct fmemopen_cookie {
   char* buf;