diff --git a/cde/programs/dtmail/MotifApp/InterruptibleCmd.C b/cde/programs/dtmail/MotifApp/InterruptibleCmd.C
index 3fe82cfb9..85beb5bdd 100644
--- a/cde/programs/dtmail/MotifApp/InterruptibleCmd.C
+++ b/cde/programs/dtmail/MotifApp/InterruptibleCmd.C
@@ -76,7 +76,7 @@ extern forceUpdate( Widget );
 InterruptibleCmd::InterruptibleCmd ( char *name, char *label, int active ) :
                         NoUndoCmd ( name, label, active )
 {
-    _wpId        = NULL;   // There is no work procedure yet
+    _wpId        = 0;   // There is no work procedure yet
     _callback    = NULL;	   // Callbacks are specified in execute()
     _clientData  = NULL;
     _done        = FALSE; 
diff --git a/cde/programs/dtmail/MotifApp/WorkingDialogManager.C b/cde/programs/dtmail/MotifApp/WorkingDialogManager.C
index b66cdfb5c..70742fd2b 100644
--- a/cde/programs/dtmail/MotifApp/WorkingDialogManager.C
+++ b/cde/programs/dtmail/MotifApp/WorkingDialogManager.C
@@ -78,7 +78,7 @@ WorkingDialogManager *theWorkingDialogManager =
 WorkingDialogManager::WorkingDialogManager ( char   *name ) : 
                            DialogManager ( name )
 {
-    _intervalId  = NULL;
+    _intervalId  = 0;
     _busyPixmaps = NULL;
 }