diff --git a/include/hook.h b/include/hook.h
index 83aadd45..f7a6e231 100644
--- a/include/hook.h
+++ b/include/hook.h
@@ -42,12 +42,19 @@ void add_hook(const char *name, hookfn fn);
 void remove_hook(const char *name, hookfn fn);
 void call_hook(int id, void *arg);
 
+typedef struct
+{
+	struct Client *client;
+	void *arg1;
+	void *arg2;
+} hook_data;
+
 typedef struct
 {
 	struct Client *client;
 	const void *arg1;
 	const void *arg2;
-} hook_data;
+} hook_cdata;
 
 typedef struct
 {
diff --git a/modules/m_links.c b/modules/m_links.c
index 03e79571..3893e402 100644
--- a/modules/m_links.c
+++ b/modules/m_links.c
@@ -82,7 +82,7 @@ mo_links(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source
 	const char *mask = "";
 	struct Client *target_p;
 	char clean_mask[2 * HOSTLEN + 4];
-	hook_data hd;
+	hook_cdata hd;
 
 	rb_dlink_node *ptr;