diff --git a/cde/programs/localized/util/merge.c b/cde/programs/localized/util/merge.c
index ca6055124..e019dab37 100644
--- a/cde/programs/localized/util/merge.c
+++ b/cde/programs/localized/util/merge.c
@@ -95,6 +95,10 @@
 #include <stdlib.h>
 #include <string.h>
 #include <locale.h>
+#include <unistd.h>
+#include <limits.h>
+#include <sys/types.h>
+
 #include <Dt/MsgCatP.h>
 
 /* [0] for primary, [1] for default */