diff --git a/rebuild.sh b/rebuild.sh
index 869f3aab..f89a5686 100755
--- a/rebuild.sh
+++ b/rebuild.sh
@@ -2,7 +2,7 @@
 set -e
 set -x
 export CFLAGS="-Wall -Werror -ggdb3"
-cd `dirname $0`
+cd "$(dirname "$0")"
 mkdir -p build
 cd build
-cmake -DCMAKE_INSTALL_PREFIX:PATH=/var/tmp/unshield .. && make && make install
+cmake -G "Unix Makefiles" -DCMAKE_INSTALL_PREFIX:PATH=/var/tmp/unshield .. && make && make install