diff --git a/src/core/frontend/emu_window.cpp b/src/core/frontend/emu_window.cpp
index fb84eff3a..b932f9d6c 100644
--- a/src/core/frontend/emu_window.cpp
+++ b/src/core/frontend/emu_window.cpp
@@ -75,7 +75,7 @@ static bool IsWithinTouchscreen(const Layout::FramebufferLayout& layout, unsigne
     }
 }
 
-std::tuple<unsigned, unsigned> EmuWindow::ClipToTouchScreen(unsigned new_x, unsigned new_y) {
+std::tuple<unsigned, unsigned> EmuWindow::ClipToTouchScreen(unsigned new_x, unsigned new_y) const {
     if (Settings::values.toggle_3d) {
         if (new_x >= framebuffer_layout.width / 2)
             new_x -= framebuffer_layout.width / 2;
diff --git a/src/core/frontend/emu_window.h b/src/core/frontend/emu_window.h
index 5fefcff54..be3ff589a 100644
--- a/src/core/frontend/emu_window.h
+++ b/src/core/frontend/emu_window.h
@@ -164,5 +164,5 @@ private:
     /**
      * Clip the provided coordinates to be inside the touchscreen area.
      */
-    std::tuple<unsigned, unsigned> ClipToTouchScreen(unsigned new_x, unsigned new_y);
+    std::tuple<unsigned, unsigned> ClipToTouchScreen(unsigned new_x, unsigned new_y) const;
 };