diff --git a/lib/Target/ARM/MCTargetDesc/CMakeLists.txt b/lib/Target/ARM/MCTargetDesc/CMakeLists.txt
index f2cf78add8b..be5ecf34603 100644
--- a/lib/Target/ARM/MCTargetDesc/CMakeLists.txt
+++ b/lib/Target/ARM/MCTargetDesc/CMakeLists.txt
@@ -1,5 +1,6 @@
 add_llvm_library(LLVMARMDesc
   ARMAsmBackend.cpp
+  ARMELFObjectWriter.cpp
   ARMMCAsmInfo.cpp
   ARMMCCodeEmitter.cpp
   ARMMCExpr.cpp