diff --git a/clang/unittests/AST/CMakeLists.txt b/clang/unittests/AST/CMakeLists.txt
--- a/clang/unittests/AST/CMakeLists.txt
+++ b/clang/unittests/AST/CMakeLists.txt
@@ -13,7 +13,6 @@
   ASTImporterVisibilityTest.cpp
   ASTTraverserTest.cpp
   ASTTypeTraitsTest.cpp
-  ASTTraverserTest.cpp
   ASTVectorTest.cpp
   CommentLexer.cpp
   CommentParser.cpp