diff --git a/src/client/game.cpp b/src/client/game.cpp
index 50e7822986c7a..5fca2e2732e73 100644
--- a/src/client/game.cpp
+++ b/src/client/game.cpp
@@ -2592,7 +2592,7 @@ ClientDynamicInfo Game::getCurrentDynamicInfo() const
 
 	return {
 		screen_size, gui_scaling, hud_scaling,
-		ClientDynamicInfo::calculateMaxFSSize(screen_size, gui_scaling)
+		ClientDynamicInfo::calculateMaxFSSize(screen_size)
 	};
 }
 
diff --git a/src/clientdynamicinfo.h b/src/clientdynamicinfo.h
index f2b5a8dcdf0d9..259505c1abfa5 100644
--- a/src/clientdynamicinfo.h
+++ b/src/clientdynamicinfo.h
@@ -16,8 +16,17 @@ struct ClientDynamicInfo
 				abs(real_hud_scaling - other.real_hud_scaling) < 0.001f;
 	}
 
-	static v2f32 calculateMaxFSSize(v2u32 render_target_size, f32 real_gui_scaling) {
-		float slot_size = 0.5555f * 96.f * real_gui_scaling;
-		return v2f32(render_target_size.X, render_target_size.Y) / slot_size;
+	static v2f32 calculateMaxFSSize(v2u32 render_target_size) {
+		f32 factor =
+#ifdef HAVE_TOUCHSCREENGUI
+				10;
+#else
+				15;
+#endif
+		f32 ratio = (f32)render_target_size.X / (f32)render_target_size.Y;
+		if (ratio < 1)
+			return { factor, factor / ratio };
+		else
+			return { factor * ratio, factor };
 	}
 };