diff --git a/src/BulletSoftBody/CMakeLists.txt b/src/BulletSoftBody/CMakeLists.txt
index 1e9edbd91..b3c32a6c5 100644
--- a/src/BulletSoftBody/CMakeLists.txt
+++ b/src/BulletSoftBody/CMakeLists.txt
@@ -20,6 +20,7 @@ SET(BulletSoftBody_SRCS
 
 	btDeformableBackwardEulerObjective.cpp
 	btDeformableBodySolver.cpp
+	btDeformableMultiBodyConstraintSolver.cpp
 	btDeformableContactProjection.cpp
 	btDeformableMultiBodyDynamicsWorld.cpp
 
@@ -52,6 +53,7 @@ SET(BulletSoftBody_HDRS
 	btDeformableBackwardEulerObjective.h
 	btDeformableBodySolver.h
 	btDeformableMultiBodyConstraintSolver.h
+	btDeformableMultiBodyConstraintSolver.h
 	btDeformableContactProjection.h
 	btDeformableMultiBodyDynamicsWorld.h