diff --git a/lldb/source/Plugins/Process/Windows/Common/TargetThreadWindows.cpp b/lldb/source/Plugins/Process/Windows/Common/TargetThreadWindows.cpp
index a69c10081ff19..790b8658e5263 100644
--- a/lldb/source/Plugins/Process/Windows/Common/TargetThreadWindows.cpp
+++ b/lldb/source/Plugins/Process/Windows/Common/TargetThreadWindows.cpp
@@ -191,6 +191,7 @@ const char *TargetThreadWindows::GetName() {
   if (SUCCEEDED(GetThreadDescription(
           m_host_thread.GetNativeThread().GetSystemHandle(), &pszThreadName))) {
     LLDB_LOGF(log, "GetThreadDescription: %ls", pszThreadName);
+    m_name.clear();
     llvm::convertUTF16ToUTF8String(
         llvm::ArrayRef(reinterpret_cast<char *>(pszThreadName),
                        wcslen(pszThreadName) * sizeof(wchar_t)),