--- a/configure.ac
+++ b/configure.ac
@@ -35,7 +35,7 @@ AC_ARG_WITH([rst2man],
 
 m4_ifndef([VARNISH_PREREQ], AC_MSG_ERROR([Need varnish.m4 -- see README.rst]))
 
-VARNISH_PREREQ([7.6], [7.7])
+
 VARNISH_VMODS([redis])
 
 VMOD_TESTS="$(cd $srcdir/src && echo tests/*.vtc)"
