diff --git a/pokerth_game.pro b/pokerth_game.pro
index a6bfdc48..6f0af10d 100644
--- a/pokerth_game.pro
+++ b/pokerth_game.pro
@@ -578,6 +578,7 @@ mac {
 		-lssl \
 		-lsqlite3 \
 		-ltinyxml \
+		-lprotobuf \
 		-lz \
 		-framework \
 		Carbon