diff --git a/clang/include/clang/AST/ASTImporter.h b/clang/include/clang/AST/ASTImporter.h
index d8e1839bea6f..7cd6499be37f 100644
--- a/clang/include/clang/AST/ASTImporter.h
+++ b/clang/include/clang/AST/ASTImporter.h
@@ -11,7 +11,7 @@
 //  context into another context.
 //
 //===----------------------------------------------------------------------===//
-#ifndef LLVM_CLANG_AST_ASTIM PORTER_H
+#ifndef LLVM_CLANG_AST_ASTIMPORTER_H
 #define LLVM_CLANG_AST_ASTIMPORTER_H
 
 #include "clang/AST/Type.h"