diff --git a/src/WtpConfig.mak b/src/WtpConfig.mak
index 495cf493..34e7c535 100644
--- a/src/WtpConfig.mak
+++ b/src/WtpConfig.mak
@@ -1,5 +1,5 @@
 #
-
+USE_CONTRIB_OPENSSL=1
 CC=clang
 
 CFLAGS += -I/usr/include/libnl3