diff --git a/c64/basic/basic_shift_mem_down.s b/c64/basic/basic_shift_mem_down.s
index 30216b77..2653049f 100644
--- a/c64/basic/basic_shift_mem_down.s
+++ b/c64/basic/basic_shift_mem_down.s
@@ -3,9 +3,6 @@
 // #LAYOUT# *   *       #IGNORE
 
 
-// XXX review this code - for memory models below 60k this can probably be simplified
-
-
 basic_shift_mem_down_and_relink:
 	// Shift memory down to basic_current_line_pointer
 	// from X bytes further along.
diff --git a/c64/basic/basic_shift_mem_up.s b/c64/basic/basic_shift_mem_up.s
index d4cdad86..cfe7c0e7 100644
--- a/c64/basic/basic_shift_mem_up.s
+++ b/c64/basic/basic_shift_mem_up.s
@@ -3,9 +3,6 @@
 // #LAYOUT# *   *       #IGNORE
 
 
-// XXX review this code - for memory models below 60k this can probably be simplified
-
-
 basic_shift_mem_up_and_relink:
 	// Shift memory up from OLDTXT
 	// X bytes.
diff --git a/c64/basic/select_device.s b/c64/basic/select_device.s
index 40bb8d49..ba23425d 100644
--- a/c64/basic/select_device.s
+++ b/c64/basic/select_device.s
@@ -3,7 +3,7 @@
 // #LAYOUT# *   *       #IGNORE
 
 
-select_device: // XXX check usage, probably more can be put into this common section
+select_device:
 
 	// Take last device number, make sure it is a drive - 8 or above. Above 30,
 	// although illegal for IEC we also consider a drive, as they exists