diff --git a/shared-bindings/_pixelbuf/PixelBuf.c b/shared-bindings/_pixelbuf/PixelBuf.c
index 8ddcf6648a..d0be2b61df 100644
--- a/shared-bindings/_pixelbuf/PixelBuf.c
+++ b/shared-bindings/_pixelbuf/PixelBuf.c
@@ -355,8 +355,9 @@ STATIC mp_obj_t pixelbuf_pixelbuf_fill(mp_obj_t self_in, mp_obj_t value) {
             if (self->auto_write)
                 call_show(self_in);
     }
+    return mp_const_none;
 }
-STATIC MP_DEFINE_CONST_FUN_OBJ_1(pixelbuf_pixelbuf_show_obj, pixelbuf_pixelbuf_fill);
+STATIC MP_DEFINE_CONST_FUN_OBJ_2(pixelbuf_pixelbuf_fill_obj, pixelbuf_pixelbuf_fill);
 
 
 //|   .. method:: __getitem__(index)
diff --git a/shared-bindings/_pixelbuf/PixelBuf.h b/shared-bindings/_pixelbuf/PixelBuf.h
index 18caa9219a..aa09e92613 100644
--- a/shared-bindings/_pixelbuf/PixelBuf.h
+++ b/shared-bindings/_pixelbuf/PixelBuf.h
@@ -48,6 +48,6 @@ typedef struct {
 } pixelbuf_pixelbuf_obj_t;
 
 void pixelbuf_recalculate_brightness(pixelbuf_pixelbuf_obj_t *self);
-mp_obj_t call_show(mp_obj_t self_in, char origin);
+mp_obj_t call_show(mp_obj_t self_in);
 
 #endif  // CP_SHARED_BINDINGS_PIXELBUF_PIXELBUF_H