diff --git a/src/thread.cpp b/src/thread.cpp
index 2cad2ada..4cc5944e 100644
--- a/src/thread.cpp
+++ b/src/thread.cpp
@@ -120,7 +120,7 @@ struct thread_info_t
 typedef struct _MY_EXCEPTION_REGISTRATION_RECORD
 {
     struct _MY_EXCEPTION_REGISTRATION_RECORD *Next;
-    void *Handler;
+    EXCEPTION_DISPOSITION (*Handler) (EXCEPTION_RECORD*, void*, CONTEXT*, void*);
 } MY_EXCEPTION_REGISTRATION_RECORD;
 
 static EXCEPTION_DISPOSITION NTAPI continue_execution (EXCEPTION_RECORD *rec,