diff --git a/CMakeModules/FindLibraries.cmake b/CMakeModules/FindLibraries.cmake
index 20e15ba..384f7ea 100644
--- a/CMakeModules/FindLibraries.cmake
+++ b/CMakeModules/FindLibraries.cmake
@@ -4,7 +4,13 @@ list(APPEND LIBWEBRTC_LIBRARIES webrtc)
 
 if (UNIX AND NOT APPLE)
   find_package(X11 REQUIRED)
-  list(APPEND LIBWEBRTC_LIBRARIES ${X11_LIBRARIES} ${CMAKE_DL_LIBS})
+  list(APPEND LIBWEBRTC_LIBRARIES ${X11_LIBRARIES} ${CMAKE_DL_LIBS} rt)
+
+  set(THREADS_PREFER_PTHREAD_FLAG ON)
+  find_package(Threads REQUIRED)
+  if (CMAKE_HAVE_THREADS_LIBRARY)
+    list(APPEND LIBWEBRTC_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
+  endif (CMAKE_HAVE_THREADS_LIBRARY)
 endif (UNIX AND NOT APPLE)
 
 if (APPLE)