diff --git a/EmulatorPkg/Library/DxeEmuStdErrSerialPortLib/DxeEmuStdErrSerialPortLib.c b/EmulatorPkg/Library/DxeEmuStdErrSerialPortLib/DxeEmuStdErrSerialPortLib.c
index 8d95921c03..00d9f19369 100644
--- a/EmulatorPkg/Library/DxeEmuStdErrSerialPortLib/DxeEmuStdErrSerialPortLib.c
+++ b/EmulatorPkg/Library/DxeEmuStdErrSerialPortLib/DxeEmuStdErrSerialPortLib.c
@@ -66,6 +66,10 @@ SerialPortWrite (
   IN UINTN     NumberOfBytes
   )
 {
+  if (gEmuThunk == NULL) {
+    return NumberOfBytes;
+  }
+  
   return gEmuThunk->WriteStdErr (Buffer, NumberOfBytes);
 }