diff --git a/c64/kernal/screen/screen_calculate_lnmx.s b/c64/kernal/screen/screen_calculate_lnmx.s
index 3f1669a7..163d4a75 100644
--- a/c64/kernal/screen/screen_calculate_lnmx.s
+++ b/c64/kernal/screen/screen_calculate_lnmx.s
@@ -4,9 +4,6 @@
 //
 
 
-// YYY value is improper shortly after linee growth!
-
-
 screen_calculate_LNMX: // YYY review all the code, mayybe some optimizations are possible using this value
 
 	ldy TBLX
diff --git a/c64/kernal/screen/screen_grow_logical_line.s b/c64/kernal/screen/screen_grow_logical_line.s
index e5b9e9e3..0c8bd8a6 100644
--- a/c64/kernal/screen/screen_grow_logical_line.s
+++ b/c64/kernal/screen/screen_grow_logical_line.s
@@ -134,4 +134,5 @@ screen_grow_logical_line_copy_done:
 
 	ldx TBLX
 	inx
-	jmp screen_clear_line
+	jsr screen_clear_line
+	jmp screen_calculate_LNMX