diff --git a/lib/CodeGen/CMakeLists.txt b/lib/CodeGen/CMakeLists.txt
index 62cf33900d6..d385b860d86 100644
--- a/lib/CodeGen/CMakeLists.txt
+++ b/lib/CodeGen/CMakeLists.txt
@@ -22,6 +22,7 @@ add_llvm_library(LLVMCodeGen
   LiveVariables.cpp
   LowerSubregs.cpp
   MachineBasicBlock.cpp
+  MachineCSE.cpp
   MachineDominators.cpp
   MachineFunction.cpp
   MachineFunctionAnalysis.cpp