diff --git a/clang/lib/Format/FormatToken.h b/clang/lib/Format/FormatToken.h
index 6aaf66c7bb7e54..6b7d475232b0e1 100644
--- a/clang/lib/Format/FormatToken.h
+++ b/clang/lib/Format/FormatToken.h
@@ -693,7 +693,7 @@ struct FormatToken {
   }
 
   /// Returns the previous token ignoring comments.
-  FormatToken *getPreviousNonComment() const {
+  LLVM_NODISCARD FormatToken *getPreviousNonComment() const {
     FormatToken *Tok = Previous;
     while (Tok && Tok->is(tok::comment))
       Tok = Tok->Previous;