diff --git a/sql/sql_lex.cc b/sql/sql_lex.cc
index 84b0af98963..992510a18e6 100644
--- a/sql/sql_lex.cc
+++ b/sql/sql_lex.cc
@@ -2232,12 +2232,6 @@ bool st_select_lex::test_limit()
 
 
 
-st_select_lex_unit* st_select_lex_unit::master_unit()
-{
-    return this;
-}
-
-
 st_select_lex* st_select_lex_unit::outer_select()
 {
   return (st_select_lex*) master;
@@ -2345,12 +2339,6 @@ bool st_select_lex::add_ftfunc_to_list(Item_func_match *func)
 }
 
 
-st_select_lex_unit* st_select_lex::master_unit()
-{
-  return (st_select_lex_unit*) master;
-}
-
-
 st_select_lex* st_select_lex::outer_select()
 {
   return (st_select_lex*) master->get_master();
diff --git a/sql/sql_lex.h b/sql/sql_lex.h
index dcbbb98fcba..20b156a36b6 100644
--- a/sql/sql_lex.h
+++ b/sql/sql_lex.h
@@ -526,7 +526,6 @@ public:
   void exclude();
   void exclude_from_tree();
 
-  virtual st_select_lex_unit* master_unit()= 0;
   virtual st_select_lex* outer_select()= 0;
   virtual st_select_lex* return_after_parsing()= 0;
 
@@ -668,7 +667,6 @@ public:
   TABLE *insert_table_with_stored_vcol;
 
   void init_query();
-  st_select_lex_unit* master_unit();
   st_select_lex* outer_select();
   st_select_lex* first_select()
   {
@@ -898,7 +896,7 @@ public:
 
   void init_query();
   void init_select();
-  st_select_lex_unit* master_unit();
+  st_select_lex_unit* master_unit() { return (st_select_lex_unit*) master; }
   st_select_lex_unit* first_inner_unit() 
   { 
     return (st_select_lex_unit*) slave;