diff --git a/libsrc/cbm/cbm_read.s b/libsrc/cbm/cbm_read.s
index a30983302..29e0e1f19 100644
--- a/libsrc/cbm/cbm_read.s
+++ b/libsrc/cbm/cbm_read.s
@@ -49,7 +49,7 @@ _cbm_read:
         stx     ptr1+1
         tax
         inx
-        stx     ptr1            ; Save size with each byte incremented.
+        stx     ptr1            ; Save size with both bytes incremented separately.
 
         jsr     popax
         sta     ptr2
diff --git a/libsrc/cbm/cbm_write.s b/libsrc/cbm/cbm_write.s
index a199c1d90..5ac07209c 100644
--- a/libsrc/cbm/cbm_write.s
+++ b/libsrc/cbm/cbm_write.s
@@ -43,7 +43,7 @@ _cbm_write:
         stx     ptr1+1
         tax
         inx
-        stx     ptr1            ; Save size with each byte incremented
+        stx     ptr1            ; Save size with both bytes incremented separately
 
         jsr     popax
         sta     ptr2
diff --git a/libsrc/common/getcwd.s b/libsrc/common/getcwd.s
index c0a1c3634..4bfc0a5b6 100644
--- a/libsrc/common/getcwd.s
+++ b/libsrc/common/getcwd.s
@@ -23,7 +23,7 @@
         stx     ptr2+1
         tax
         inx
-        stx     ptr2
+        stx     ptr2            ; Save size with each byte incremented separately
 
         jsr     popptr1         ; Get buf to ptr1