diff --git a/src/mesa/drivers/dri/radeon/radeon_mipmap_tree.c b/src/mesa/drivers/dri/radeon/radeon_mipmap_tree.c
index 55aa450..9ccc6bc 100644
--- a/src/mesa/drivers/dri/radeon/radeon_mipmap_tree.c
+++ b/src/mesa/drivers/dri/radeon/radeon_mipmap_tree.c
@@ -95,7 +95,7 @@ static void compute_tex_image_offset(radeonContextPtr rmesa, radeon_mipmap_tree
 	/* Find image size in bytes */
 	if (mt->compressed) {
 		/* TODO: Is this correct? Need test cases for compressed textures! */
-		lvl->rowstride = (lvl->width * mt->bpp + 63) & ~63;
+		lvl->rowstride = (lvl->width * mt->bpp + row_align) & ~row_align;
 		lvl->size = radeon_compressed_texture_size(mt->radeon->glCtx,
 							   lvl->width, lvl->height, lvl->depth, mt->compressed);
 	} else if (mt->target == GL_TEXTURE_RECTANGLE_NV) {