diff --git a/cde/lib/DtSvc/DtUtil2/SunDtHelp.c b/cde/lib/DtSvc/DtUtil2/SunDtHelp.c
index aa7a15fc5..759a87554 100644
--- a/cde/lib/DtSvc/DtUtil2/SunDtHelp.c
+++ b/cde/lib/DtSvc/DtUtil2/SunDtHelp.c
@@ -49,6 +49,7 @@
  *+ENOTICE
  */
 
+#include <stdlib.h>
 #include <stdio.h>
 #include <dlfcn.h>
 #include "Help.h"