diff --git a/install.sh b/install.sh
old mode 100644
new mode 100755
index 00cc7c1..2b3dfec
--- a/install.sh
+++ b/install.sh
@@ -1,10 +1,9 @@
 #!/usr/bin/env bash
 
 # Installs the Git repo object sizes tool.
-#
-# Usage:
-# ./install.sh [TARGET]
-# Default for TARGET is /usr/local/bin/git-repo-object-sizes
 
+target=/usr/local/bin/git-repo-object-sizes
 
-curl https://repo.jcloud-services.ddns.net/software/git-repo-object-sizes/git-repo-object-sizes_latest_linux_amd64.tar.gz | tar -xzf - -O ./git-repo-object-sizes.sh > $target;
\ No newline at end of file
+curl https://repo.jcloud-services.ddns.net/software/git-repo-object-sizes/git-repo-object-sizes_latest_linux_amd64.tar.gz | tar -xzf - -O git-repo-object-sizes/git-repo-object-sizes.sh > "$target"
+
+chmod +x "$target"
\ No newline at end of file