diff --git a/src/LinearMath/CMakeLists.txt b/src/LinearMath/CMakeLists.txt
index 207eed94a..82393547b 100644
--- a/src/LinearMath/CMakeLists.txt
+++ b/src/LinearMath/CMakeLists.txt
@@ -6,5 +6,6 @@ ${BULLET_PHYSICS_SOURCE_DIR}/src }
 ADD_LIBRARY(LibLinearMath
 btQuickprof.cpp
 btGeometryUtil.cpp
+btAlignedAllocator.cpp
 )