diff --git a/src/BulletCollision/CMakeLists.txt b/src/BulletCollision/CMakeLists.txt
index cab6cb019..959ab257f 100644
--- a/src/BulletCollision/CMakeLists.txt
+++ b/src/BulletCollision/CMakeLists.txt
@@ -11,6 +11,7 @@ SET(BulletCollision_SRCS
 	BroadphaseCollision/btOverlappingPairCache.cpp
 	BroadphaseCollision/btQuantizedBvh.cpp
 	BroadphaseCollision/btSimpleBroadphase.cpp
+	CollisionDispatch/btActivatingCollisionAlgorithm.cpp
 	CollisionDispatch/btCollisionDispatcher.cpp
 	CollisionDispatch/btCollisionObject.cpp
 	CollisionDispatch/btCollisionWorld.cpp
@@ -105,6 +106,7 @@ SET(BroadphaseCollision_HDRS
 	BroadphaseCollision/btSimpleBroadphase.h
 )
 SET(CollisionDispatch_HDRS
+	CollisionDispatch/btActivatingCollisionAlgorithm.h
 	CollisionDispatch/btCollisionConfiguration.h
 	CollisionDispatch/btCollisionCreateFunc.h
 	CollisionDispatch/btCollisionDispatcher.h
diff --git a/src/Makefile.am b/src/Makefile.am
index d7fd17e13..9c18ea62a 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -41,6 +41,7 @@ libbulletcollision_a_SOURCES = \
 		BulletCollision/NarrowPhaseCollision/btGjkPairDetector.cpp \
 		BulletCollision/NarrowPhaseCollision/btGjkEpa2.cpp \
 		BulletCollision/NarrowPhaseCollision/btVoronoiSimplexSolver.cpp \
+		BulletCollision/CollisionDispatch/btActivatingCollisionAlgorithm.cpp \
 		BulletCollision/CollisionDispatch/btCollisionObject.cpp \
 		BulletCollision/CollisionDispatch/btEmptyCollisionAlgorithm.cpp \
 		BulletCollision/CollisionDispatch/btGhostObject.cpp \