diff --git a/common.sh b/common.sh
index d567a3f..c3faec6 100644
--- a/common.sh
+++ b/common.sh
@@ -3,3 +3,4 @@ PROJECT_NAME=relation_imserver
 SOURCE_DIR=third_party/game2006go/server
 SOURCE_PATH=third_party/game2006go/server/imserver
 COMPILE_CMD=make
+EXT_PKG_FILES=database