diff --git a/c++/carla-discovery/Makefile b/c++/carla-discovery/Makefile
index 390f5d5..9dab1d4 100644
--- a/c++/carla-discovery/Makefile
+++ b/c++/carla-discovery/Makefile
@@ -36,7 +36,7 @@ endif
 POSIX_BUILD_FLAGS = $(BUILD_FLAGS)
 POSIX_32BIT_FLAGS = $(32BIT_FLAGS) -L/usr/lib32 -L/usr/lib/i386-linux-gnu
 POSIX_64BIT_FLAGS = $(64BIT_FLAGS) -L/usr/lib64 -L/usr/lib/x86_64-linux-gnu
-POSIX_LINK_FLAGS  = $(LINK_FLAGS) -ldl
+POSIX_LINK_FLAGS  = $(LINK_FLAGS) -ldl -lpthread
 
 WIN_BUILD_FLAGS   = $(BUILD_FLAGS)
 WIN_32BIT_FLAGS   = $(32BIT_FLAGS)