diff --git a/mysql-test/r/merge.result b/mysql-test/r/merge.result
index d00423ea4bf..ffb715e3903 100644
--- a/mysql-test/r/merge.result
+++ b/mysql-test/r/merge.result
@@ -635,13 +635,13 @@ b varchar(10),
 index (a,b)
 ) engine=myisam;
 insert into t2 values ( null, '');
-insert into t2 values ( 9999999999.9999, '');
+insert into t2 values ( 9999999999.999, '');
 insert into t3 select * from t2;
 select min(a), max(a) from t1;
 min(a)	max(a)
-9999999999.9999	9999999999.9999
+9999999999.9990	9999999999.9990
 flush tables;
 select min(a), max(a) from t1;
 min(a)	max(a)
-9999999999.9999	9999999999.9999
+9999999999.9990	9999999999.9990
 drop table t1, t2, t3;
diff --git a/mysql-test/t/merge.test b/mysql-test/t/merge.test
index 429013af56f..a3e3d487c67 100644
--- a/mysql-test/t/merge.test
+++ b/mysql-test/t/merge.test
@@ -291,7 +291,7 @@ create table t3 (
 ) engine=myisam;
 
 insert into t2 values ( null, '');
-insert into t2 values ( 9999999999.9999, '');
+insert into t2 values ( 9999999999.999, '');
 insert into t3 select * from t2;
 select min(a), max(a) from t1;
 flush tables;