diff --git a/libsrc/c64/c64-1351.s b/libsrc/c64/c64-1351.s
index ab4732aaa..5fbc8122e 100644
--- a/libsrc/c64/c64-1351.s
+++ b/libsrc/c64/c64-1351.s
@@ -175,8 +175,10 @@ BOX:    ldy     #5
        	rts
 
 ;----------------------------------------------------------------------------
-; MOVE: Move the mouse to a new position which is passed in X=ptr1, Y=a/x.
-; No checks are done if the new position is valid (within the bounding box or
+; MOVE: Move the mouse to a new position. The position is passed as it comes
+; from the C program, that is: X on the stack and Y in a/x. The C wrapper will
+; remove the parameter from the stack on return.
+; No checks are done if the new position is valid (within the bounding box or 
 ; the screen). No return code required.
 ;
 
@@ -186,10 +188,13 @@ MOVE:   sei                             ; No interrupts
         stx     YPos+1                  ; New Y position
         jsr     CMOVEY                  ; Set it
 
-        lda     ptr1
-        ldx     ptr1+1
-        sta     XPos
-        stx     XPos+1                  ; New X position
+        ldy     #$01
+        lda     (sp),y
+        sta     XPos+1
+        tax
+        dey
+        lda     (sp),y
+        sta     XPos                    ; New X position
 
         jsr     CMOVEX			; Move the cursor
 
diff --git a/libsrc/mouse/mouse_move.s b/libsrc/mouse/mouse_move.s
index f3052c1ee..2245221f6 100644
--- a/libsrc/mouse/mouse_move.s
+++ b/libsrc/mouse/mouse_move.s
@@ -9,16 +9,15 @@
 ;  */
 ;
 
-        .import         ptr1: zp
+        .import         incsp2
+        .import         ptr1: zp                            
 
         .include        "mouse-kernel.inc"
 
 .proc   _mouse_move
 
-        sta     ptr1
-        stx     ptr1+1                  ; Store x into ptr1
-        jsr     popax
-        jmp     mouse_move              ; Call the driver
+        jsr     mouse_move              ; Call the driver
+        jmp     incsp2                  ; Drop the parameter
 
 .endproc