diff --git a/src/mesa/main/readpix.c b/src/mesa/main/readpix.c
index c1489d21109..84b5224c858 100644
--- a/src/mesa/main/readpix.c
+++ b/src/mesa/main/readpix.c
@@ -213,8 +213,7 @@ fast_read_rgba_pixels_memcpy( struct gl_context *ctx,
       return GL_FALSE;
 
    /* check for things we can't handle here */
-   if (packing->SwapBytes ||
-       packing->LsbFirst) {
+   if (packing->SwapBytes) {
       return GL_FALSE;
    }