diff --git a/run-lldb-tests.sh b/run-lldb-tests.sh
index 72d6cf7..80ec411 100755
--- a/run-lldb-tests.sh
+++ b/run-lldb-tests.sh
@@ -17,7 +17,7 @@
 set -ex
 
 if [ $# -lt 1 ]; then
-    echo $0 dest
+    echo $0 prefix
     exit 1
 fi
 PREFIX="$1"