diff --git a/install.sh b/install.sh
index de2473b7..83e20a02 100755
--- a/install.sh
+++ b/install.sh
@@ -5,7 +5,7 @@
 
 set -e
 
-cd "${0%/*}"
+cd "$(dirname "$0")"
 
 if [ -z "${PREFIX}" ]; then
   PREFIX="/usr/local"