diff --git a/src/backend/commands/async.c b/src/backend/commands/async.c
index 2bda8a0765c832a0464fce3d078ba638b4e98e6f..9bdb3a931052bce2713043270a3532cd133d77eb 100644
--- a/src/backend/commands/async.c
+++ b/src/backend/commands/async.c
@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *    $Header: /cvsroot/pgsql/src/backend/commands/async.c,v 1.6 1996/11/06 08:21:26 scrappy Exp $
+ *    $Header: /cvsroot/pgsql/src/backend/commands/async.c,v 1.7 1996/11/16 08:08:44 bryanh Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -62,6 +62,7 @@
 #include <signal.h>
 #include <string.h>
 #include <errno.h>
+#include <sys/types.h>    /* Needed by in.h on Ultrix */
 #include <netinet/in.h>
 
 #include <postgres.h>
diff --git a/src/backend/libpq/auth.c b/src/backend/libpq/auth.c
index ba015dd211450e1ae1baff16a063d8f871a25ba4..d1cb560f1920e4a576e8da41fb104e3d31e4c5a7 100644
--- a/src/backend/libpq/auth.c
+++ b/src/backend/libpq/auth.c
@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *    $Header: /cvsroot/pgsql/src/backend/libpq/auth.c,v 1.7 1996/11/06 08:48:23 scrappy Exp $
+ *    $Header: /cvsroot/pgsql/src/backend/libpq/auth.c,v 1.8 1996/11/16 08:09:15 bryanh Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -59,6 +59,7 @@
 #include <pwd.h>
 #include <ctype.h>		        /* isspace() declaration */
 
+#include <sys/types.h>    /* needed by in.h on Ultrix */
 #include <netinet/in.h>
 #include <arpa/inet.h>
 
diff --git a/src/backend/libpq/hba.c b/src/backend/libpq/hba.c
index 409fe12fa8b790eb64b5ebd18ac34abf7782c56e..43e983d28772a3a8bd9215142af845cbff4369f5 100644
--- a/src/backend/libpq/hba.c
+++ b/src/backend/libpq/hba.c
@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *    $Header: /cvsroot/pgsql/src/backend/libpq/hba.c,v 1.11 1996/11/10 03:00:26 momjian Exp $
+ *    $Header: /cvsroot/pgsql/src/backend/libpq/hba.c,v 1.12 1996/11/16 08:09:16 bryanh Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -17,12 +17,10 @@
 #include <pwd.h>
 #include <sys/stat.h>
 #include <sys/socket.h>
+#include <sys/types.h>    /* needed by in.h on Ultrix */
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <unistd.h>
-#if defined(sparc_solaris)
-#include <inet_aton.h> /* after I copied it into port/sparc_solaris */
-#endif
 
 #include <postgres.h>
 #include <miscadmin.h>