diff --git a/src/nostalgia/core/studio/tilesheetpixelgrid.hpp b/src/nostalgia/core/studio/tilesheetpixelgrid.hpp
index 1f716d50..bffaa0ca 100644
--- a/src/nostalgia/core/studio/tilesheetpixelgrid.hpp
+++ b/src/nostalgia/core/studio/tilesheetpixelgrid.hpp
@@ -76,6 +76,7 @@ class TileSheetGrid {
 
 		void setBufferObjects(const NostalgiaGraphic &img, glutils::BufferSet *bg) noexcept;
 
+		[[nodiscard]]
 		class ImVec2 pixelSize() const noexcept;
 
 };
diff --git a/src/nostalgia/core/studio/tilesheetpixels.hpp b/src/nostalgia/core/studio/tilesheetpixels.hpp
index 4b052ea2..fe7ad09d 100644
--- a/src/nostalgia/core/studio/tilesheetpixels.hpp
+++ b/src/nostalgia/core/studio/tilesheetpixels.hpp
@@ -55,7 +55,8 @@ class TileSheetPixels {
 
 		void setBufferObjects(const NostalgiaGraphic &img, const NostalgiaPalette &pal, glutils::BufferSet *bg) noexcept;
 
-		class ImVec2 pixelSize() const noexcept;
+		[[nodiscard]]
+		ImVec2 pixelSize() const noexcept;
 
 };