diff --git a/configure.ac b/configure.ac
index 6a85c7b7..53e9552d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -57,7 +57,7 @@ AS_CASE([$host],
        []
 )
 
-dnls Checks for options
+dnl Checks for options
 AC_ARG_WITH([crypto],
 	[AS_HELP_STRING([--with-crypto],
 	[enable the use of the MD5 fast implementation of the OpenSSL crypto library])],