diff --git a/src/backend/utils/adt/cash.c b/src/backend/utils/adt/cash.c
index d093ce8038..f7e78fa105 100644
--- a/src/backend/utils/adt/cash.c
+++ b/src/backend/utils/adt/cash.c
@@ -26,7 +26,6 @@
 #include "libpq/pqformat.h"
 #include "utils/builtins.h"
 #include "utils/cash.h"
-#include "utils/int8.h"
 #include "utils/numeric.h"
 #include "utils/pg_locale.h"
 
diff --git a/src/backend/utils/adt/formatting.c b/src/backend/utils/adt/formatting.c
index a1145e2721..419469fab5 100644
--- a/src/backend/utils/adt/formatting.c
+++ b/src/backend/utils/adt/formatting.c
@@ -92,7 +92,6 @@
 #include "utils/datetime.h"
 #include "utils/float.h"
 #include "utils/formatting.h"
-#include "utils/int8.h"
 #include "utils/memutils.h"
 #include "utils/numeric.h"
 #include "utils/pg_locale.h"
diff --git a/src/backend/utils/adt/numeric.c b/src/backend/utils/adt/numeric.c
index 1de744855f..644d7d3d21 100644
--- a/src/backend/utils/adt/numeric.c
+++ b/src/backend/utils/adt/numeric.c
@@ -39,7 +39,6 @@
 #include "utils/builtins.h"
 #include "utils/float.h"
 #include "utils/guc.h"
-#include "utils/int8.h"
 #include "utils/numeric.h"
 #include "utils/pg_lsn.h"
 #include "utils/sortsupport.h"
diff --git a/src/backend/utils/adt/rangetypes.c b/src/backend/utils/adt/rangetypes.c
index 815175a654..6c23d02c46 100644
--- a/src/backend/utils/adt/rangetypes.c
+++ b/src/backend/utils/adt/rangetypes.c
@@ -37,7 +37,6 @@
 #include "miscadmin.h"
 #include "utils/builtins.h"
 #include "utils/date.h"
-#include "utils/int8.h"
 #include "utils/lsyscache.h"
 #include "utils/rangetypes.h"
 #include "utils/timestamp.h"