diff --git a/src/memcheck.supp b/src/memcheck.supp
index e2226142c..bf053b9ee 100644
--- a/src/memcheck.supp
+++ b/src/memcheck.supp
@@ -1,4 +1,5 @@
 # Suppress warnings produced by Valgrind.
+# http://wiki.wxwidgets.org/Valgrind_Suppression_File_Howto
 {
    # This warning is due to a memory-leak bug in the g++ compiler.
    # Soonho reported the problem. Gcc team said this a known problem, and will be fixed