diff --git a/unix/cellrendererbutton.c b/unix/cellrendererbutton.c
index 719b0371..e3bbf48b 100644
--- a/unix/cellrendererbutton.c
+++ b/unix/cellrendererbutton.c
@@ -7,7 +7,6 @@
 // - resizing a column with a button in it crashes the program
 // - accessibility
 // - right side too big?
-// - does prelight work on 3.10 and 3.20?
 
 #define cellRendererButtonType (cellRendererButton_get_type())
 #define cellRendererButton(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), cellRendererButtonType, cellRendererButton))