diff --git a/src/backend/access/heap/vacuumlazy.c b/src/backend/access/heap/vacuumlazy.c
index 8ce501151e..049ec2703b 100644
--- a/src/backend/access/heap/vacuumlazy.c
+++ b/src/backend/access/heap/vacuumlazy.c
@@ -614,7 +614,7 @@ heap_vacuum_rel(Relation onerel, VacuumParams *params,
 							 vacrelstats->new_dead_tuples,
 							 OldestXmin);
 			appendStringInfo(&buf,
-							 _("buffer usage: %d hits, %d misses, %d dirtied\n"),
+							 _("buffer usage: %zd hits, %zd misses, %zd dirtied\n"),
 							 VacuumPageHit,
 							 VacuumPageMiss,
 							 VacuumPageDirty);
diff --git a/src/backend/utils/init/globals.c b/src/backend/utils/init/globals.c
index b1f6291b99..eb19644419 100644
--- a/src/backend/utils/init/globals.c
+++ b/src/backend/utils/init/globals.c
@@ -140,9 +140,9 @@ int			VacuumCostPageDirty = 20;
 int			VacuumCostLimit = 200;
 double		VacuumCostDelay = 0;
 
-int			VacuumPageHit = 0;
-int			VacuumPageMiss = 0;
-int			VacuumPageDirty = 0;
+int64		VacuumPageHit = 0;
+int64		VacuumPageMiss = 0;
+int64		VacuumPageDirty = 0;
 
 int			VacuumCostBalance = 0;	/* working state for vacuum */
 bool		VacuumCostActive = false;
diff --git a/src/include/miscadmin.h b/src/include/miscadmin.h
index 62d64aa0a1..f985453ec3 100644
--- a/src/include/miscadmin.h
+++ b/src/include/miscadmin.h
@@ -252,9 +252,9 @@ extern int	VacuumCostPageDirty;
 extern int	VacuumCostLimit;
 extern double VacuumCostDelay;
 
-extern int	VacuumPageHit;
-extern int	VacuumPageMiss;
-extern int	VacuumPageDirty;
+extern int64 VacuumPageHit;
+extern int64 VacuumPageMiss;
+extern int64 VacuumPageDirty;
 
 extern int	VacuumCostBalance;
 extern bool VacuumCostActive;