diff --git a/lib/omapi/data.c b/lib/omapi/data.c
index 11c2b96262..5e3c38990c 100644
--- a/lib/omapi/data.c
+++ b/lib/omapi/data.c
@@ -15,7 +15,7 @@
  * SOFTWARE.
  */
 
-/* $Id: data.c,v 1.12 2000/05/08 14:38:10 tale Exp $ */
+/* $Id: data.c,v 1.13 2000/05/24 18:43:28 tale Exp $ */
 
 /* Principal Author: Ted Lemon */
 
@@ -25,6 +25,7 @@
 
 #include <config.h>
 
+#include <stdlib.h>  /* Required on BSD/OS 3.1 for abort() used in va_arg(). */
 
 #include <isc/mem.h>
 #include <isc/string.h>
diff --git a/lib/omapi/generic.c b/lib/omapi/generic.c
index 03c117546b..5786a2ae95 100644
--- a/lib/omapi/generic.c
+++ b/lib/omapi/generic.c
@@ -15,7 +15,7 @@
  * SOFTWARE.
  */
 
-/* $Id: generic.c,v 1.13 2000/05/08 14:38:11 tale Exp $ */
+/* $Id: generic.c,v 1.14 2000/05/24 18:43:29 tale Exp $ */
 
 /* Principal Author: Ted Lemon */
 
@@ -25,6 +25,8 @@
 
 #include <config.h>
 
+#include <stdlib.h>  /* Required on BSD/OS 3.1 for abort() used in va_arg(). */
+
 #include <isc/mem.h>
 #include <isc/string.h>
 #include <isc/util.h>