diff --git a/UnleashedRecomp/stdafx.h b/UnleashedRecomp/stdafx.h
index 58644d49..4c553910 100644
--- a/UnleashedRecomp/stdafx.h
+++ b/UnleashedRecomp/stdafx.h
@@ -49,7 +49,6 @@ using Microsoft::WRL::ComPtr;
 #include <list>
 #include <semaphore>
 #include <numeric>
-#include <numbers>
 #include <charconv>
 
 #include "framework.h"
diff --git a/UnleashedRecomp/ui/options_menu.cpp b/UnleashedRecomp/ui/options_menu.cpp
index 6266ca01..7520554c 100644
--- a/UnleashedRecomp/ui/options_menu.cpp
+++ b/UnleashedRecomp/ui/options_menu.cpp
@@ -157,7 +157,7 @@ static void DrawTitle()
 
     auto rectMoveMotion = ComputeMotion(g_appearTime, rectMoveMotionOffset, squareMoveDuration);
     auto rectEndMotion = ComputeMotion(g_appearTime, 0.0, squareMoveEndDuration);
-    auto rectBlinkMotion = sin(ComputeMotion(g_appearTime, squareMoveEndDuration + rectBlinkMotionOffset, squareBlinkDuration) * std::numbers::pi);
+    auto rectBlinkMotion = sin(ComputeMotion(g_appearTime, squareMoveEndDuration + rectBlinkMotionOffset, squareBlinkDuration) * M_PI);
     auto rectAlphaMotion = 1.0f;
     auto rectY = Scale(10);
     auto rectSize = Scale(32);