diff --git a/src/frame_main.cpp b/src/frame_main.cpp
index 1a73dbf6c..b35c32960 100644
--- a/src/frame_main.cpp
+++ b/src/frame_main.cpp
@@ -257,7 +257,7 @@ void FrameMain::UpdateTitle() {
 	newTitle << " - Aegisub " << GetAegisubLongVersionString();
 #endif
 
-#if defined(__WXMAC__) && !defined(__LP64__)
+#if defined(__WXMAC__)
 	// On Mac, set the mark in the close button
 	OSXSetModified(context->subsController->IsModified());
 #endif