diff --git a/clang-tools-extra/clang-tidy/ClangTidy.cpp b/clang-tools-extra/clang-tidy/ClangTidy.cpp
index 40ac6918faf40..b877ea06dc05c 100644
--- a/clang-tools-extra/clang-tidy/ClangTidy.cpp
+++ b/clang-tools-extra/clang-tidy/ClangTidy.cpp
@@ -233,7 +233,7 @@ class ErrorReporter {
         if (!tooling::applyAllReplacements(Replacements.get(), Rewrite)) {
           llvm::errs() << "Can't apply replacements for file " << File << "\n";
         }
-        AnyNotWritten &= Rewrite.overwriteChangedFiles();
+        AnyNotWritten |= Rewrite.overwriteChangedFiles();
       }
 
       if (AnyNotWritten) {