diff --git a/cde/programs/dtmail/libDtMail/Common/Threads.C b/cde/programs/dtmail/libDtMail/Common/Threads.C
index ce0664d18..f1059b1c2 100644
--- a/cde/programs/dtmail/libDtMail/Common/Threads.C
+++ b/cde/programs/dtmail/libDtMail/Common/Threads.C
@@ -466,7 +466,7 @@ ThreadCreate(
 #else
 	ThreadEntryPoint, void*)
 {
-    return(NULL);
+  return(0);
 }
 #endif
 
@@ -476,7 +476,7 @@ ThreadSelf(void)
 #if defined(POSIX_THREADS)
     return(thr_self());
 #else
-    return(NULL);
+    return(0);
 #endif
 
 }