diff --git a/TBF/BenchControl/TestMethods/iPerlCommunication/iPerlCommunicationForm.cs b/TBF/BenchControl/TestMethods/iPerlCommunication/iPerlCommunicationForm.cs
index 78cffbffb..e301f9afb 100644
--- a/TBF/BenchControl/TestMethods/iPerlCommunication/iPerlCommunicationForm.cs
+++ b/TBF/BenchControl/TestMethods/iPerlCommunication/iPerlCommunicationForm.cs
@@ -892,7 +892,7 @@ namespace TBF.BenchControl.TestMethods.iPerlCommunication
                                 {
                                     ihead.CommFailed = true;
 
-                                    if ((wm.ResultCode & (int)Results.Entities.ResultCode.RfidErrorCodeMask) == 0)
+                                    if (wm != null && (wm.ResultCode & (int)Results.Entities.ResultCode.RfidErrorCodeMask) == 0)
                                     {
                                         wm.ResultCode |= (((int)error << 16) | ((int)tests[i].ItemNr << 20));
                                     }
@@ -903,7 +903,7 @@ namespace TBF.BenchControl.TestMethods.iPerlCommunication
                                 {
                                     ihead.CommFailed = true;
 
-                                    if ((wm.ResultCode & (int)Results.Entities.ResultCode.RfidErrorCodeMask) == 0)
+                                    if (wm != null && (wm.ResultCode & (int)Results.Entities.ResultCode.RfidErrorCodeMask) == 0)
                                     {
                                         wm.ResultCode |= (((int)error << 16) | ((int)tests[i].ItemNr << 20));
                                     }