diff --git a/ChangeLog b/ChangeLog
index 0015003c..e1317aca 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -15225,3 +15225,6 @@
 2016-06-10 Fred Gleason <fredg@paravelsystems.com>
 	* Fixed a bug in 'lib/rdlist_logs.cpp' that failed to process
 	SQL NULL date values correctly.
+2016-06-10 Fred Gleason <fredg@paravelsystems.com>
+	* Fixed a bug in 'utils/rdmaint/rdmaint.cpp' that failed to process
+	SQL NULL date values correctly.
diff --git a/utils/rdmaint/rdmaint.cpp b/utils/rdmaint/rdmaint.cpp
index 2a1a8aae..1f907a3a 100644
--- a/utils/rdmaint/rdmaint.cpp
+++ b/utils/rdmaint/rdmaint.cpp
@@ -204,9 +204,10 @@ void MainObject::PurgeLogs()
   RDSqlQuery *q;
   QDateTime dt=QDateTime(QDate::currentDate(),QTime::currentTime());
 
-  sql=QString().sprintf("select NAME from LOGS where \
-                         (PURGE_DATE!=\"0000-00-00\")&&(PURGE_DATE<\"%s\")",
-			(const char *)dt.date().toString("yyyy-MM-dd"));
+  sql=QString("select NAME from LOGS where ")+
+    "(PURGE_DATE!=\"0000-00-00\")&&"+
+    "(PURGE_DATE is not null)&&"+
+    "(PURGE_DATE<\""+dt.date().toString("yyyy-MM-dd")+"\")";
   q=new RDSqlQuery(sql);
   while(q->next()) {
     maint_config->