diff --git a/src/debug/ntapi_tt_debug_break_process.c b/src/debug/ntapi_tt_debug_break_process.c
index 3ad0daf..96c0ba0 100644
--- a/src/debug/ntapi_tt_debug_break_process.c
+++ b/src/debug/ntapi_tt_debug_break_process.c
@@ -37,7 +37,7 @@ int32_t __stdcall __ntapi_tt_debug_break_process(
 	struct __dbg_hoppla	hoppla;
 	uintptr_t		sptop;
 	uintptr_t		spreg;
-	int32_t			(*dbg_break_point)(void *);
+	int32_t			(__stdcall *dbg_break_point)(void *);
 
 	/* interrupt & return */
 	dbg_break_point = pe_get_procedure_address(