diff --git a/lib/Target/X86/CMakeLists.txt b/lib/Target/X86/CMakeLists.txt
index 346d6c85417..a6c97437a66 100644
--- a/lib/Target/X86/CMakeLists.txt
+++ b/lib/Target/X86/CMakeLists.txt
@@ -26,6 +26,7 @@ set(sources
   X86RegisterInfo.cpp
   X86Subtarget.cpp
   X86TargetMachine.cpp
+  X86TargetObjectFile.cpp
   X86FastISel.cpp
   )