diff --git a/stdlib-sup39/draw-lite.sun b/stdlib-sup39/draw-lite.sun
index 0cde7f5..596b783 100644
--- a/stdlib-sup39/draw-lite.sun
+++ b/stdlib-sup39/draw-lite.sun
@@ -1,2 +1,2 @@
 builtin drawText(x, y, fontSize, colorTop, colorBot, fmt, ...);
-builtin drawRect(fill, stroke, x0, y0, x1, y1);
+builtin drawRect(fill, x0, y0, x1, y1);
diff --git a/stdlib-sup39/draw.sun b/stdlib-sup39/draw.sun
index d98c429..ba8986e 100644
--- a/stdlib-sup39/draw.sun
+++ b/stdlib-sup39/draw.sun
@@ -13,8 +13,9 @@ builtin setMTX(dst, ...);
 var const MTX_LOADIMM = 0;
 var const MTX_NEW = 0;
 
+// drawRect(fill, x0, y0, x1, y1)
 // drawRect(fill, stroke, x0, y0, x1, y1, resetMtx=true)
-builtin drawRect(fill, stroke, x0, y0, x1, y1, ...);
+builtin drawRect(fill, x0, y0, x1, y1, ...);
 var const FILL_NONE = 0;
 var const STROKE_NONE = 0;