diff --git a/windows/draw.cpp b/windows/draw.cpp
index 35a8b73e..6e278fc5 100644
--- a/windows/draw.cpp
+++ b/windows/draw.cpp
@@ -394,7 +394,7 @@ void uiDrawTransform(uiDrawContext *c, uiDrawMatrix *m)
 	// 	Direct2D uses column vectors and I don't know if this is even documented
 	// b) that's what Core Graphics does
 	// TODO see if Microsoft says to do this
-	dm = dm * cur;		// TODO why not *= ?
+	dm = dm * cur;		// for whatever reason operator * is defined but not operator *=
 	c->rt->SetTransform(&dm);
 }
 
diff --git a/windows/drawmatrix.cpp b/windows/drawmatrix.cpp
index e8c319d8..e2f29d1d 100644
--- a/windows/drawmatrix.cpp
+++ b/windows/drawmatrix.cpp
@@ -2,8 +2,6 @@
 #include "uipriv_windows.hpp"
 #include "draw.hpp"
 
-// TODO convert to C++
-
 void m2d(uiDrawMatrix *m, D2D1_MATRIX_3X2_F *d)
 {
 	d->_11 = m->M11;