diff --git a/Source/cairo/WaylandCairoSurface.m b/Source/cairo/WaylandCairoSurface.m
index 0b871af..c6bd101 100644
--- a/Source/cairo/WaylandCairoSurface.m
+++ b/Source/cairo/WaylandCairoSurface.m
@@ -210,6 +210,8 @@ create_shm_buffer(struct window *window)
     cairo_surface_get_device_offset(cairo_surface, &backupOffsetX, &backupOffsetY);
     cairo_surface_set_device_offset(cairo_surface, 0, 0);
 
+    // FIXME: This seems to be creating a context to paint into cairo_surface,
+    // and then copies back into the same cairo_surface.
     cairo_t *cr = cairo_create(cairo_surface);
 
     cairo_rectangle(cr, x, y, width, height);
diff --git a/Source/wayland/WaylandServer.m b/Source/wayland/WaylandServer.m
index a5e4868..748c110 100644
--- a/Source/wayland/WaylandServer.m
+++ b/Source/wayland/WaylandServer.m
@@ -373,6 +373,14 @@ pointer_handle_axis(void *data, struct wl_pointer *pointer,
                               window->height - wlconfig->pointer.y);
   eventFlags = 0;
 
+  /* FIXME: we should get axis_source out of wl_pointer; however, the wl_pointer
+     is not defined in wayland-client.h. How does one get the axis_source out of
+     it to confirm the source is the physical mouse wheel? */
+#if 0
+  if (pointer->axis_source != WL_POINTER_AXIS_SOURCE_WHEEL)
+    return;
+#endif
+
   float mouse_scroll_multiplier = wlconfig->mouse_scroll_multiplier;
   /* For smooth-scroll events, we're not doing any cross-event or delta
      calculations, as is done in button event handling. */