diff --git a/src/test/regress/expected/float8-small-is-zero.out b/src/test/regress/expected/float8-small-is-zero.out
index ce173f72c9..1c3bbae6b8 100644
--- a/src/test/regress/expected/float8-small-is-zero.out
+++ b/src/test/regress/expected/float8-small-is-zero.out
@@ -511,10 +511,10 @@ SELECT '-2147483648.4'::float8::int4;
 
 SELECT '-2147483648.6'::float8::int4;
 ERROR:  integer out of range
-SELECT '9223372036854774784'::float8::int8;
+SELECT '9223372036854773760'::float8::int8;
         int8         
 ---------------------
- 9223372036854774784
+ 9223372036854773760
 (1 row)
 
 SELECT '9223372036854775807'::float8::int8;
diff --git a/src/test/regress/expected/float8.out b/src/test/regress/expected/float8.out
index 1d51012a69..75c0bf389b 100644
--- a/src/test/regress/expected/float8.out
+++ b/src/test/regress/expected/float8.out
@@ -513,10 +513,10 @@ SELECT '-2147483648.4'::float8::int4;
 
 SELECT '-2147483648.6'::float8::int4;
 ERROR:  integer out of range
-SELECT '9223372036854774784'::float8::int8;
+SELECT '9223372036854773760'::float8::int8;
         int8         
 ---------------------
- 9223372036854774784
+ 9223372036854773760
 (1 row)
 
 SELECT '9223372036854775807'::float8::int8;
diff --git a/src/test/regress/sql/float8.sql b/src/test/regress/sql/float8.sql
index ed87942446..6595fd2b95 100644
--- a/src/test/regress/sql/float8.sql
+++ b/src/test/regress/sql/float8.sql
@@ -183,7 +183,7 @@ SELECT '2147483647.4'::float8::int4;
 SELECT '2147483647.6'::float8::int4;
 SELECT '-2147483648.4'::float8::int4;
 SELECT '-2147483648.6'::float8::int4;
-SELECT '9223372036854774784'::float8::int8;
+SELECT '9223372036854773760'::float8::int8;
 SELECT '9223372036854775807'::float8::int8;
 SELECT '-9223372036854775808.5'::float8::int8;
 SELECT '-9223372036854780000'::float8::int8;