diff --git a/src/classes/PMsrHandler.cpp b/src/classes/PMsrHandler.cpp
index 027df28d..d67f1769 100644
--- a/src/classes/PMsrHandler.cpp
+++ b/src/classes/PMsrHandler.cpp
@@ -4993,7 +4993,7 @@ Bool_t PMsrHandler::HandleStatisticEntry(PMsrLines &lines)
       if (status == 2) {
         fStatistic.fDate = TString(date)+TString(", ")+TString(time);
       } else {
-        fStatistic.fDate = TString("????-??-??, ??:??:??");
+        fStatistic.fDate = TString("\?\?\?\?-\?\?-\?\?, \?\?:\?\?:\?\?");
       }
     }
     // extract chisq