diff --git a/client/include/app.h b/client/include/app.h
index 783449a4..9143e02e 100644
--- a/client/include/app.h
+++ b/client/include/app.h
@@ -138,14 +138,14 @@ void app_clipboardRequest(const LG_ClipboardReplyFn replyFn, void * opaque);
  */
 void app_alert(LG_MsgAlert type, const char * fmt, ...);
 
-typedef void * MsgBoxHandle;
+typedef struct MsgBoxHandle * MsgBoxHandle;
 MsgBoxHandle app_msgBox(const char * caption, const char * fmt, ...);
 
 typedef void (*MsgBoxConfirmCallback)(bool yes, void * opaque);
 MsgBoxHandle app_confirmMsgBox(const char * caption,
     MsgBoxConfirmCallback callback, void * opaque, const char * fmt, ...);
 
-void app_msgBoxClose(MsgBoxHandle * handle);
+void app_msgBoxClose(MsgBoxHandle handle);
 
 typedef struct KeybindHandle * KeybindHandle;
 typedef void (*KeybindFn)(int sc, void * opaque);
diff --git a/client/src/app.c b/client/src/app.c
index 19202fff..be050bf8 100644
--- a/client/src/app.c
+++ b/client/src/app.c
@@ -665,7 +665,7 @@ MsgBoxHandle app_confirmMsgBox(const char * caption,
   return handle;
 }
 
-void app_msgBoxClose(MsgBoxHandle * handle)
+void app_msgBoxClose(MsgBoxHandle handle)
 {
   if (!handle)
     return;
diff --git a/client/src/overlay/msg.c b/client/src/overlay/msg.c
index 02694083..e13b2b9f 100644
--- a/client/src/overlay/msg.c
+++ b/client/src/overlay/msg.c
@@ -219,7 +219,7 @@ MsgBoxHandle overlayMsg_show(
   return (MsgBoxHandle)msg;
 }
 
-void overlayMsg_close(MsgBoxHandle * handle)
+void overlayMsg_close(MsgBoxHandle handle)
 {
   if (ll_removeData(l_msg.messages, handle))
     freeMsg((struct Msg *)handle);
diff --git a/client/src/overlay/msg.h b/client/src/overlay/msg.h
index 96c59844..3bd8a121 100644
--- a/client/src/overlay/msg.h
+++ b/client/src/overlay/msg.h
@@ -32,6 +32,6 @@ MsgBoxHandle overlayMsg_show(
     const char * caption, MsgBoxConfirmCallback confirm, void * opaque,
     const char * fmt, va_list args);
 
-void overlayMsg_close(MsgBoxHandle * handle);
+void overlayMsg_close(MsgBoxHandle handle);
 
 #endif