diff --git a/llvm/tools/dsymutil/Reproducer.cpp b/llvm/tools/dsymutil/Reproducer.cpp
index 448736d702e4..5c60758c6f80 100644
--- a/llvm/tools/dsymutil/Reproducer.cpp
+++ b/llvm/tools/dsymutil/Reproducer.cpp
@@ -81,4 +81,5 @@ Reproducer::createReproducer(ReproducerMode Mode, StringRef Root) {
   case ReproducerMode::Off:
     return std::make_unique<Reproducer>();
   }
+  llvm_unreachable("All cases handled above.");
 }