diff --git a/relay32/snoop.c b/relay32/snoop.c
index 704f5474bc312a7253a7e9efa9e7f4d84f7bc805..271f3eb932b0bc478220b428afcdf186ad279326 100644
--- a/relay32/snoop.c
+++ b/relay32/snoop.c
@@ -24,8 +24,8 @@ DEFAULT_DEBUG_CHANNEL(snoop)
 
 char **debug_snoop_excludelist = NULL, **debug_snoop_includelist = NULL;
 
-extern void SNOOP_Entry();
-extern void SNOOP_Return();
+extern void WINAPI SNOOP_Entry();
+extern void WINAPI SNOOP_Return();
 
 #ifdef __i386__