diff --git a/include/discord-rpc.h b/include/discord-rpc.h
index 8c117ac..33c9689 100644
--- a/include/discord-rpc.h
+++ b/include/discord-rpc.h
@@ -49,7 +49,7 @@ typedef struct DiscordJoinRequest {
 } DiscordJoinRequest;
 
 typedef struct DiscordEventHandlers {
-    void (*ready)();
+    void (*ready)(void);
     void (*disconnected)(int errorCode, const char* message);
     void (*errored)(int errorCode, const char* message);
     void (*joinGame)(const char* joinSecret);