diff --git a/lib/Support/CMakeLists.txt b/lib/Support/CMakeLists.txt
index 0001aae813a..f1347f9d0ef 100644
--- a/lib/Support/CMakeLists.txt
+++ b/lib/Support/CMakeLists.txt
@@ -3,6 +3,7 @@ add_llvm_library(LLVMSupport
   APInt.cpp
   APSInt.cpp
   Allocator.cpp
+  circular_raw_ostream.cpp
   CommandLine.cpp
   ConstantRange.cpp
   Debug.cpp