diff --git a/testing/run_regressions.sh b/testing/run_regressions.sh
index 715e9242..6052159f 100755
--- a/testing/run_regressions.sh
+++ b/testing/run_regressions.sh
@@ -146,6 +146,9 @@ Options:
 EOF
           return 3
           ;;
+        '')
+          break;
+          ;;
         *)
           echo "Invalid command, please try again."
           ;;