diff --git a/test/InverseDynamics/CMakeLists.txt b/test/InverseDynamics/CMakeLists.txt
index 79c9aebf2..e8f39846c 100644
--- a/test/InverseDynamics/CMakeLists.txt
+++ b/test/InverseDynamics/CMakeLists.txt
@@ -15,6 +15,9 @@ ADD_DEFINITIONS(-D_VARIADIC_MAX=10)
 LINK_LIBRARIES(
  BulletInverseDynamicsUtils BulletInverseDynamics Bullet3Common LinearMath gtest
 )
+IF (NOT WIN32)	
+	LINK_LIBRARIES(		pthread	) 
+ENDIF()
 
 
 	ADD_EXECUTABLE(Test_BulletInverseDynamics
diff --git a/test/collision/CMakeLists.txt b/test/collision/CMakeLists.txt
index 5c92e7d77..1c94cc073 100644
--- a/test/collision/CMakeLists.txt
+++ b/test/collision/CMakeLists.txt
@@ -13,6 +13,9 @@ LINK_LIBRARIES(
  LinearMath gtest
 )
 
+IF (NOT WIN32)	
+	LINK_LIBRARIES(		pthread	) 
+ENDIF()
 
 	ADD_EXECUTABLE(Test_Collision
 		main.cpp