diff --git a/ChangeLog b/ChangeLog
index 7fc6297d37..332b24ad50 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Apr 28 15:09:02 PDT 1998 Manish Singh <yosh@gimp.org>
+
+	* plug-ins/CEL/CEL.c
+	* plug-ins/psd/psd.c: portability fix for SunOS 4
+
 Mon Apr 27 20:43:14 PDT 1998 Manish Singh <yosh@gimp.org>
 
 	* plug-ins/animationplay/animationplay.c
diff --git a/plug-ins/CEL/CEL.c b/plug-ins/CEL/CEL.c
index 510fdef896..84031ca6b8 100644
--- a/plug-ins/CEL/CEL.c
+++ b/plug-ins/CEL/CEL.c
@@ -23,6 +23,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
 #include <gtk/gtk.h>
 #include <libgimp/gimp.h>
diff --git a/plug-ins/common/CEL.c b/plug-ins/common/CEL.c
index 510fdef896..84031ca6b8 100644
--- a/plug-ins/common/CEL.c
+++ b/plug-ins/common/CEL.c
@@ -23,6 +23,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
 #include <gtk/gtk.h>
 #include <libgimp/gimp.h>
diff --git a/plug-ins/common/psd.c b/plug-ins/common/psd.c
index c3d8732f72..908090bc9c 100644
--- a/plug-ins/common/psd.c
+++ b/plug-ins/common/psd.c
@@ -25,7 +25,7 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
 /*
@@ -96,6 +96,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 #include <glib.h>
 #include "libgimp/gimp.h"
 
diff --git a/plug-ins/psd/psd.c b/plug-ins/psd/psd.c
index c3d8732f72..908090bc9c 100644
--- a/plug-ins/psd/psd.c
+++ b/plug-ins/psd/psd.c
@@ -25,7 +25,7 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
 /*
@@ -96,6 +96,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 #include <glib.h>
 #include "libgimp/gimp.h"