diff --git a/supplemental/scripts/install-agent.sh b/supplemental/scripts/install-agent.sh
index e4e9dcea..710978c0 100755
--- a/supplemental/scripts/install-agent.sh
+++ b/supplemental/scripts/install-agent.sh
@@ -286,6 +286,9 @@ detect_mips_endianness() {
   echo "mips"
 }
 
+# Ensure script exits immediately on errors
+set -eu
+
 # Default values
 PORT=45876
 UNINSTALL=false