diff --git a/vlib/gg/draw.c.v b/vlib/gg/draw.c.v
index b1488961cd11a2..aace662ea2cf58 100644
--- a/vlib/gg/draw.c.v
+++ b/vlib/gg/draw.c.v
@@ -343,8 +343,11 @@ pub fn (ctx &Context) draw_rounded_rect_empty(x f32, y f32, w f32, h f32, radius
 	sgl.v2f(rtx + r, rty)
 	sgl.v2f(rtx + r, rby)
 	// bottom
-	sgl.v2f(lbx, lby + r - 1)
-	sgl.v2f(rbx, rby + r - 1)
+	// Note: test on native windows, macos, and linux if you need to change the offset literal here,
+	// with `v run vlib/gg/testdata/draw_rounded_rect_empty.vv` . Using 1 here, looks good on windows,
+	// and on linux with LIBGL_ALWAYS_SOFTWARE=true, but misaligned on native macos and linux.
+	sgl.v2f(lbx, lby + r - 0.5)
+	sgl.v2f(rbx, rby + r - 0.5)
 	// left
 	sgl.v2f(sx + 1, lty)
 	sgl.v2f(sx + 1, lby)