diff --git a/buildroot-external/board/rpi2/post-image.sh b/buildroot-external/board/rpi2/post-image.sh
index fb5bb92fb..b5b736be1 100755
--- a/buildroot-external/board/rpi2/post-image.sh
+++ b/buildroot-external/board/rpi2/post-image.sh
@@ -43,4 +43,4 @@ create_disk_image ${BINARIES_DIR} ${IMAGE_FILE} 2
 fix_disk_image_mbr ${IMAGE_FILE}
 
 rm -rf ${IMAGE_FILE}.gz
-gzip ${IMAGE_FILE}
+gzip --best ${IMAGE_FILE}