diff --git a/mysql-test/r/partition_error.result b/mysql-test/r/partition_error.result
index 0e4f89b70db..1e0f2cbea10 100644
--- a/mysql-test/r/partition_error.result
+++ b/mysql-test/r/partition_error.result
@@ -1089,7 +1089,7 @@ partition by key (a)
 subpartition by hash (sin(a+b))
 (partition x1 (subpartition x11, subpartition x12),
 partition x2 (subpartition x21, subpartition x22));
-ERROR HY000: It is only possible to mix RANGE/LIST partitioning with HASH/KEY partitioning for subpartitioning
+ERROR HY000: This partition function is not allowed
 select load_file('$MYSQLD_DATADIR/test/t1.par');
 load_file('$MYSQLD_DATADIR/test/t1.par')
 NULL
diff --git a/mysql-test/t/partition_error.test b/mysql-test/t/partition_error.test
index c0f49a4d414..9a6939032a3 100644
--- a/mysql-test/t/partition_error.test
+++ b/mysql-test/t/partition_error.test
@@ -1145,7 +1145,7 @@ subpartition by hash (rand(a+b));
 #
 # Subpartition by hash, wrong subpartition function
 #
---error ER_SUBPARTITION_ERROR
+--error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
 CREATE TABLE t1 (
 a int not null,
 b int not null,
diff --git a/sql/partition_info.cc b/sql/partition_info.cc
index 958f77f5bd0..336010cc7dd 100644
--- a/sql/partition_info.cc
+++ b/sql/partition_info.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2006, 2015, Oracle and/or its affiliates. All rights reserved.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -1109,15 +1109,22 @@ bool partition_info::check_partition_info(THD *thd, handlerton **eng_type,
   {
     int err= 0;
 
+    /* Check for partition expression. */
     if (!list_of_part_fields)
     {
       DBUG_ASSERT(part_expr);
       err= part_expr->walk(&Item::check_partition_func_processor, 0,
                            NULL);
-      if (!err && is_sub_partitioned() && !list_of_subpart_fields)
-        err= subpart_expr->walk(&Item::check_partition_func_processor, 0,
-                                NULL);
     }
+
+    /* Check for sub partition expression. */
+    if (!err && is_sub_partitioned() && !list_of_subpart_fields)
+    {
+      DBUG_ASSERT(subpart_expr);
+      err= subpart_expr->walk(&Item::check_partition_func_processor, 0,
+                              NULL);
+    }
+
     if (err)
     {
       my_error(ER_PARTITION_FUNCTION_IS_NOT_ALLOWED, MYF(0));
diff --git a/sql/sql_table.cc b/sql/sql_table.cc
index b8858cffce6..2951d921e15 100644
--- a/sql/sql_table.cc
+++ b/sql/sql_table.cc
@@ -3913,6 +3913,12 @@ static bool check_if_created_table_can_be_opened(THD *thd,
   result= (open_table_def(thd, &share, 0) ||
            open_table_from_share(thd, &share, "", 0, (uint) READ_ALL,
                                  0, &table, TRUE));
+  /*
+    Assert that the change list is empty as no partition function currently
+    needs to modify item tree. May need call THD::rollback_item_tree_changes
+    later before calling closefrm if the change list is not empty.
+  */
+  DBUG_ASSERT(thd->change_list.is_empty());
   if (! result)
     (void) closefrm(&table, 0);