diff --git a/examples/circle/CMakeLists.txt b/examples/circle/CMakeLists.txt
index d63c06dd..1c7dae33 100644
--- a/examples/circle/CMakeLists.txt
+++ b/examples/circle/CMakeLists.txt
@@ -4,7 +4,7 @@
 #
 
 add_executable(circle-atomic atomic.c)
-target_link_libraries(circle-atomic bfdev)
+target_link_libraries(circle-atomic bfdev pthread)
 add_test(circle-atomic circle-atomic)
 
 if(${CMAKE_PROJECT_NAME} STREQUAL "bfdev")