diff --git a/lib/Interpreter/CIFactory.cpp b/lib/Interpreter/CIFactory.cpp
index e7e1bdf7..171c56e0 100644
--- a/lib/Interpreter/CIFactory.cpp
+++ b/lib/Interpreter/CIFactory.cpp
@@ -17,6 +17,7 @@
 #include "cling/Utils/Platform.h"
 
 #include "clang/AST/ASTContext.h"
+#include "clang/Basic/Builtins.h"
 #include "clang/Basic/TargetInfo.h"
 #include "clang/Basic/Version.h"
 #include "clang/Driver/Compilation.h"
diff --git a/lib/Interpreter/ForwardDeclPrinter.cpp b/lib/Interpreter/ForwardDeclPrinter.cpp
index 5709d778..d19c8d32 100644
--- a/lib/Interpreter/ForwardDeclPrinter.cpp
+++ b/lib/Interpreter/ForwardDeclPrinter.cpp
@@ -11,6 +11,7 @@
 #include "clang/AST/Expr.h"
 #include "clang/AST/ExprCXX.h"
 #include "clang/AST/Type.h"
+#include "clang/Basic/Builtins.h"
 #include "clang/Lex/Preprocessor.h"
 #include "clang/Sema/Sema.h"