1 files changed, 2 insertions, 3 deletions
diff --git a/lib/ShadowCopy/LockFile.cpp b/lib/ShadowCopy/LockFile.cpp
index b9008863..aac4c170 100644
--- a/lib/ShadowCopy/LockFile.cpp
+++ b/lib/ShadowCopy/LockFile.cpp
@@ -20,10 +20,9 @@ int wmain(int argc, wchar_t* argv[])
     }
     std::wstring filename = argv[1];
 
-    //obtain exclusive lock on test file
     HANDLE hFile = ::CreateFile(filename.c_str(),
-                                GENERIC_READ | GENERIC_WRITE,
-                                FILE_SHARE_READ | FILE_SHARE_WRITE,
+                                GENERIC_READ,
+                                0, //obtain *exclusive* lock on test file
                                 nullptr,
                                 OPEN_EXISTING,
                                 FILE_FLAG_BACKUP_SEMANTICS,