diff --git a/test/Makefile.am b/test/Makefile.am
index a58539cf..5d2eab77 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -18,7 +18,7 @@ test_weof_LDADD = ../libevent_core.la
 test_time_SOURCES = test-time.c
 test_time_LDADD = ../libevent_core.la
 test_ratelim_SOURCES = test-ratelim.c
-test_ratelim_LDADD = ../libevent_core.la
+test_ratelim_LDADD = ../libevent_core.la -lm
 
 regress_SOURCES = regress.c regress_buffer.c regress_http.c regress_dns.c \
 	regress_rpc.c regress.gen.c regress.gen.h regress_et.c \
diff --git a/test/test-ratelim.c b/test/test-ratelim.c
index d252e946..845e7504 100644
--- a/test/test-ratelim.c
+++ b/test/test-ratelim.c
@@ -312,7 +312,11 @@ main(int argc, char **argv)
 	cfg_connlimit *= ratio;
 	cfg_grouplimit *= ratio;
 
-	srandom(time(NULL));
+	{
+		struct timeval tv;
+		evutil_gettimeofday(&tv, NULL);
+		srandom(tv.tv_usec);
+	}
 
 	evthread_enable_lock_debuging();