diff --git a/configure.ac b/configure.ac
index e27fd54..9346a92 100644
--- a/configure.ac
+++ b/configure.ac
@@ -28,8 +28,8 @@ AC_CHECK_HEADERS(fcgiapp.h fcgi_stdio.h rrd.h yajl/yajl_gen.h, [],
 
 AC_CHECK_LIB(fcgi, FCGI_Accept, [],
 	     [AC_MSG_ERROR(cannot find libfcgi.)])
-AC_CHECK_LIB(rrd_th, rrd_graph_v, [],
-	     [AC_MSG_ERROR(cannot find librrd_th.)], [-lm])
+AC_CHECK_LIB(rrd, rrd_graph_v, [],
+	     [AC_MSG_ERROR(cannot find librrd.)], [-lm])
 AC_CHECK_LIB(yajl, yajl_gen_alloc, [],
 	     [AC_MSG_ERROR(cannot find libyajl.)])