diff --git a/src/backend/utils/adt/date.c b/src/backend/utils/adt/date.c
index afad0ecbf7..e582ebc2c6 100644
--- a/src/backend/utils/adt/date.c
+++ b/src/backend/utils/adt/date.c
@@ -9,7 +9,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/utils/adt/date.c,v 1.30 1999/02/21 03:49:27 scrappy Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/utils/adt/date.c,v 1.31 1999/03/14 16:44:01 momjian Exp $
  *
  * NOTES
  *	 This code is actually (almost) unused.
@@ -94,7 +94,7 @@ static int	sec_tab[] = {
  * Function prototypes -- internal to this file only
  */
 
-static void reltime2tm(int32 time, struct tm * tm);
+static void reltime2tm(RelativeTime time, struct tm * tm);
 
 #ifdef NOT_USED
 static int	correct_unit(char *unit, int *unptr);
@@ -161,7 +161,7 @@ reltimein(char *str)
  *		reltimeout		- converts the internal format to a reltime string
  */
 char *
-reltimeout(int32 time)
+reltimeout(RelativeTime time)
 {
 	char	   *result;
 	struct tm	tt,
@@ -193,7 +193,7 @@ do { \
 } while(0)
 
 static void
-reltime2tm(int32 time, struct tm * tm)
+reltime2tm(RelativeTime time, struct tm * tm)
 {
 	TMODULO(time, tm->tm_year, 31536000);
 	TMODULO(time, tm->tm_mon, 2592000);
diff --git a/src/include/utils/builtins.h b/src/include/utils/builtins.h
index f947dff613..9522169dcd 100644
--- a/src/include/utils/builtins.h
+++ b/src/include/utils/builtins.h
@@ -6,7 +6,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: builtins.h,v 1.75 1999/03/14 05:09:05 momjian Exp $
+ * $Id: builtins.h,v 1.76 1999/03/14 16:44:01 momjian Exp $
  *
  * NOTES
  *	  This should normally only be included by fmgr.h.
@@ -195,8 +195,8 @@ extern int32 pqtest(struct varlena * vlena);
 /* arrayfuncs.c */
 
 /* date.c */
-extern int32 reltimein(char *timestring);
-extern char *reltimeout(int32 timevalue);
+extern RelativeTime reltimein(char *timestring);
+extern char *reltimeout(RelativeTime timevalue);
 extern TimeInterval tintervalin(char *intervalstr);
 extern char *tintervalout(TimeInterval interval);
 extern RelativeTime timespan_reltime(TimeSpan *timespan);
diff --git a/src/include/utils/nabstime.h b/src/include/utils/nabstime.h
index 58a262d3aa..fca6b62877 100644
--- a/src/include/utils/nabstime.h
+++ b/src/include/utils/nabstime.h
@@ -6,7 +6,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: nabstime.h,v 1.18 1999/02/13 23:22:25 momjian Exp $
+ * $Id: nabstime.h,v 1.19 1999/03/14 16:44:02 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -23,8 +23,13 @@
  *
  * ----------------------------------------------------------------
  */
-typedef int32 AbsoluteTime;
-typedef int32 RelativeTime;
+/* The original typedefs are bogus - they assume that the system's 'time_t'
+ * type is of size 32-bits.  Under AlphaLinux, time_t is a long int, which
+ * is 64-bits.  Therefore, typedef these both as simply 'time_t', and let
+ * the OS define what the size really is. -- RME 3/5/99
+ */
+typedef time_t AbsoluteTime;
+typedef time_t RelativeTime;
 
 typedef struct
 {