diff --git a/tools/llvm-mc/CMakeLists.txt b/tools/llvm-mc/CMakeLists.txt
index d2e9e71..8781846 100644
--- a/tools/llvm-mc/CMakeLists.txt
+++ b/tools/llvm-mc/CMakeLists.txt
@@ -5,5 +5,4 @@
   AsmExpr.cpp
   AsmLexer.cpp
   AsmParser.cpp
-  MC-X86Specific.cpp
   )