diff --git a/configure.ac b/configure.ac
index c7a050b..8e3cefd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@ AC_PREREQ([2.68])
 AC_INIT([pkgconf], [0.1.1], [http://jira.atheme.org/])
 AC_CONFIG_SRCDIR([pkg.c])
 AC_CONFIG_HEADERS([config.h])
-AC_CHECK_FUNCS([strlcpy strlcat strndup])
+AC_CHECK_FUNCS([getopt_long strlcpy strlcat strndup])
 
 AC_PROG_CPP
 AC_PROG_CC