diff --git a/tmux-thumbs.sh b/tmux-thumbs.sh
index c47a581..92d5625 100755
--- a/tmux-thumbs.sh
+++ b/tmux-thumbs.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+set -Eeu -o pipefail
 
 CURRENT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"