diff --git a/build b/install.sh
similarity index 97%
rename from build
rename to install.sh
index ddeb17b..dc110ee 100755
--- a/build
+++ b/install.sh
@@ -4,7 +4,7 @@ installtarget=/usr/local/bin
 chatlogdir=/var/log/bunkchat
 chatlog=chat.log
 
-if ! [$(id -u) = 0]; then
+if ! [ "$(id -u)" = 0 ]; then
     echo "ERROR: please run install with root permission" >&2
     exit 1
 fi