diff --git a/dkimverify.py b/dkimverify.py
index 0fcf4f6..896d5cd 100644
--- a/dkimverify.py
+++ b/dkimverify.py
@@ -32,7 +32,7 @@ if sys.version_info[0] >= 3:
     sys.stdin = sys.stdin.detach()
 
 message = sys.stdin.read()
-verbose = True
+verbose = '-v' in sys.argv
 if verbose:
   d = dkim.DKIM(message)
   res = d.verify()