diff --git a/src/Makefile b/src/Makefile
index 4ba2ca6a5406d154e5f64ea07d09884b215a9eb9..a65e7675227960ef17e5ade385cead72d3738060 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -58,7 +58,7 @@ ifeq ($(uname_S),SunOS)
 	# SunOS
 	INSTALL=cp -pf
 	FINAL_CFLAGS+= -D__EXTENSIONS__ -D_XPG6
-	FINAL_LIBS+= -ldl -lnsl -lsocket -lresolv -lpthread
+	FINAL_LIBS+= -ldl -lnsl -lsocket -lresolv -lpthread -lrt
 else
 ifeq ($(uname_S),Darwin)
 	# Darwin (nothing to do)