diff --git a/llvm/lib/Support/Windows/Path.inc b/llvm/lib/Support/Windows/Path.inc
index 854d531ab371f..4f0336a85daaa 100644
--- a/llvm/lib/Support/Windows/Path.inc
+++ b/llvm/lib/Support/Windows/Path.inc
@@ -157,7 +157,9 @@ std::string getMainExecutable(const char *argv0, void *MainExecAddr) {
 
   SmallString<256> RealPath;
   sys::fs::real_path(PathNameUTF8, RealPath);
-  return std::string(RealPath);
+  if (RealPath.size())
+    return std::string(RealPath);
+  return std::string(PathNameUTF8.data());
 }
 
 UniqueID file_status::getUniqueID() const {