diff --git a/Demos/ConstraintDemo/CMakeLists.txt b/Demos/ConstraintDemo/CMakeLists.txt
index ac4b30790..85e72b442 100644
--- a/Demos/ConstraintDemo/CMakeLists.txt
+++ b/Demos/ConstraintDemo/CMakeLists.txt
@@ -57,5 +57,6 @@ LibOpenGLSupport  LibBulletDynamics  LibBulletCollision LibLinearMath    ${GLUT_
 
 ADD_EXECUTABLE(ConstraintDemo
 		ConstraintDemo.cpp
+		main.cpp
 )
 
diff --git a/Demos/VehicleDemo/CMakeLists.txt b/Demos/VehicleDemo/CMakeLists.txt
index 39ad662d7..4fbd04ab0 100644
--- a/Demos/VehicleDemo/CMakeLists.txt
+++ b/Demos/VehicleDemo/CMakeLists.txt
@@ -57,5 +57,6 @@ LINK_LIBRARIES(
 
 ADD_EXECUTABLE(VehicleDemo
 	VehicleDemo.cpp
+	main.cpp
 )