diff --git a/handheld/console-border/shader-files/gb-pass-5.slang b/handheld/console-border/shader-files/gb-pass-5.slang
index 247b949..8311469 100644
--- a/handheld/console-border/shader-files/gb-pass-5.slang
+++ b/handheld/console-border/shader-files/gb-pass-5.slang
@@ -4,6 +4,7 @@ layout(push_constant) uniform Push
 {
 	vec4 OutputSize;
 	vec4 SourceSize;
+	vec4 OriginalSize;
 	float video_scale;
 } params;
 
@@ -11,7 +12,7 @@ layout(push_constant) uniform Push
 
 vec2 middle	= vec2(0.5, 0.5);
 vec2 screen_scale = params.OutputSize.xy * params.SourceSize.zw;
-vec2 border_scale = vec2(800, 400) * params.video_scale;
+vec2 border_scale = vec2(800, 400) * (params.SourceSize.y / params.OriginalSize.y);
 
 layout(std140, set = 0, binding = 0) uniform UBO
 {