diff --git a/wintable/main.c b/wintable/main.c
index d8eae68..7d70446 100644
--- a/wintable/main.c
+++ b/wintable/main.c
@@ -103,7 +103,7 @@ struct table {
 
 typedef BOOL (*handlerfunc)(struct table *, UINT, WPARAM, LPARAM, LRESULT *);
 
-handlerfunc handlerfuncs[] = {
+const handlerfunc handlerfuncs[] = {
 	APIHandler,
 	NULL,
 };