diff --git a/build/build.sh b/build/build.sh
index 5021ea2f..52ae0e7f 100755
--- a/build/build.sh
+++ b/build/build.sh
@@ -34,6 +34,6 @@ case $ARGS in
         echo "$0 prepare:  download dependent project."
         echo "$0 all:      build all target"
         echo "$0 install:  install framework"
-        echo "$0 cleanall: remove all temp file"
+        echo "$0 cleanall: remove all temp files"
         ;;
 esac