diff --git a/include/task.h b/include/task.h
index 81ac6ea..df29d97 100644
--- a/include/task.h
+++ b/include/task.h
@@ -55,7 +55,7 @@
 struct _NE_MODULE;
 
   /* signal proc typedef */
-typedef void CALLBACK (*USERSIGNALPROC)(HANDLE16, UINT16, UINT16,
+typedef void (CALLBACK *USERSIGNALPROC)(HANDLE16, UINT16, UINT16,
                                         HINSTANCE16, HQUEUE16);
 
   /* Task database. See 'Windows Internals' p. 226.