diff --git a/vm/os-windows.c b/vm/os-windows.c
index 522607e4c5..71479f2eb0 100644
--- a/vm/os-windows.c
+++ b/vm/os-windows.c
@@ -230,7 +230,9 @@ long getpagesize (void) {
 
 static void exception_handler(PEXCEPTION_RECORD rec, void *frame, void *ctx, void *dispatch)
 {
-	memory_protection_error((void*)rec->ExceptionInformation[1],SIGSEGV);
+	memory_protection_error(
+		rec->NumberParameters >= 2 ? (void*)rec->ExceptionInformation[1] : 0,
+		SIGSEGV);
 }
 
 void platform_run(void)