1 files changed, 7 insertions, 1 deletions
diff --git a/bin/testrb b/bin/testrb
index cd3837f20d..2e323f5cb0 100755
--- a/bin/testrb
+++ b/bin/testrb
@@ -1,3 +1,9 @@
 #!/usr/bin/env ruby
 require 'test/unit'
-Test::Unit.setup_argv
+Test::Unit.setup_argv {|files|
+  if files.empty?
+    puts "Usage: testrb [options] tests..."
+    exit 1
+  end
+  files
+}