diff --git a/SourceX/display.cpp b/SourceX/display.cpp
index 6f46cd304..316f5c49c 100644
--- a/SourceX/display.cpp
+++ b/SourceX/display.cpp
@@ -304,23 +304,10 @@ SDL_Surface *CreateScaledSurface(SDL_Surface *src)
 SDLSurfaceUniquePtr ScaleSurfaceToOutput(SDLSurfaceUniquePtr surface)
 {
 #ifdef USE_SDL1
-	SDL_Surface *ptr = surface.release();
-	ScaleSurfaceToOutput(&ptr);
-	return SDLSurfaceUniquePtr{ptr};
-#else
-	return surface;
-#endif
-}
-
-void ScaleSurfaceToOutput(SDL_Surface **surface)
-{
-#ifdef USE_SDL1
-	if (!OutputRequiresScaling())
-		return;
-	SDL_Surface *stretched = CreateScaledSurface(*surface);
-	SDL_FreeSurface((*surface));
-	*surface = stretched;
+	if (OutputRequiresScaling())
+		return SDLSurfaceUniquePtr { CreateScaledSurface(surface.get()) };
 #endif
+	return surface;
 }
 
 } // namespace devilution
diff --git a/SourceX/display.h b/SourceX/display.h
index b5094eb80..ec5d716a0 100644
--- a/SourceX/display.h
+++ b/SourceX/display.h
@@ -42,10 +42,6 @@ void ScaleOutputRect(SDL_Rect *rect);
 // If the output requires software scaling, replaces the given surface with a scaled one.
 SDLSurfaceUniquePtr ScaleSurfaceToOutput(SDLSurfaceUniquePtr surface);
 
-// Prefer the SDLSurfaceUniquePtr version.
-// FIXME: Delete this version.
-void ScaleSurfaceToOutput(SDL_Surface **surface);
-
 // Convert from output coordinates to logical (resolution-independent) coordinates.
 template <
     typename T,