diff --git a/lib/CodeGen/CMakeLists.txt b/lib/CodeGen/CMakeLists.txt
index 1439f418e8c..1fac39512c7 100644
--- a/lib/CodeGen/CMakeLists.txt
+++ b/lib/CodeGen/CMakeLists.txt
@@ -35,6 +35,7 @@ add_llvm_library(LLVMCodeGen
   MachinePassRegistry.cpp
   MachineRegisterInfo.cpp
   MachineSink.cpp
+  MachineSSAUpdater.cpp
   MachineVerifier.cpp
   MaxStackAlignment.cpp
   ObjectCodeEmitter.cpp