diff --git a/setup.sh b/setup.sh
index fbe2869..d5c0ce4 100755
--- a/setup.sh
+++ b/setup.sh
@@ -7,8 +7,15 @@
 
 echo "Installing dynatrace oneagent"
 
+show_help() {
+    cat <<EOF
+Usage: $0 <dynatrace_token>
+EOF
+}
+
 if [ -z "$1" ]; then
     echo "ERROR: no token provided."
+    show_help
     exit 1
 else
     echo "Downloading oneagent..."