diff --git a/lib/VMCore/CMakeLists.txt b/lib/VMCore/CMakeLists.txt
index 9b17d4bcd21..61d01ee9d37 100644
--- a/lib/VMCore/CMakeLists.txt
+++ b/lib/VMCore/CMakeLists.txt
@@ -13,6 +13,7 @@ add_llvm_library(LLVMCore
   Instruction.cpp
   Instructions.cpp
   IntrinsicInst.cpp
+  IRBuilder.cpp
   LLVMContext.cpp
   LeakDetector.cpp
   Mangler.cpp