diff --git a/libsrc/c128/c128-ram.s b/libsrc/c128/c128-ram.s
index ebb1beecc..99a571be5 100644
--- a/libsrc/c128/c128-ram.s
+++ b/libsrc/c128/c128-ram.s
@@ -206,6 +206,7 @@ COPYFROM:
         beq     @L4
         sta     tmp1
 
+        ldy     #$00
 @L3:    ldx     #MMU_CFG_RAM1
         jsr     FETCH
         sta	(ptr2),y
@@ -269,7 +270,8 @@ COPYTO: sta     ptr3
         lda     (ptr3),y                ; Get bytes in last page
         beq     @L4
         sta     tmp1
-
+                    
+        ldy     #$00
 @L3:    lda     (ptr2),y
         ldx     #MMU_CFG_RAM1
         jsr     STASH
diff --git a/libsrc/c64/c64-ram.s b/libsrc/c64/c64-ram.s
index 023f86529..f9e8b4f6c 100644
--- a/libsrc/c64/c64-ram.s
+++ b/libsrc/c64/c64-ram.s
@@ -243,7 +243,8 @@ common: ldy     #EM_COPY_COUNT+1
         sta    	$01
 
 ; Transfer the bytes in the last page
-
+  
+        ldy     #$00
 @L3:    lda	(ptr1),y
         sta	(ptr2),y
         iny
@@ -255,7 +256,7 @@ common: ldy     #EM_COPY_COUNT+1
         pla
         sta     $01                     ; Restore the old configuration
         cli
-
+                    
 ; Done
 
 @L4:    rts