diff --git a/configure.ac b/configure.ac
index 21ca78af..f18ba799 100644
--- a/configure.ac
+++ b/configure.ac
@@ -128,7 +128,7 @@ NEED_PROG(gzip, gzip)
 NEED_PROG(xz, xz)
 AC_PATH_PROG(dot, dot)
 AC_PATH_PROG(pv, pv, pv)
-NEED_PROG(bro, bro)
+AC_PATH_PROG(bro, bro, bro)
 
 
 # Test that Perl has the open/fork feature (Perl 5.8.0 and beyond).