diff --git a/sql/sql_lex.h b/sql/sql_lex.h
index 169ee4e66eb..605204fe35d 100644
--- a/sql/sql_lex.h
+++ b/sql/sql_lex.h
@@ -762,7 +762,7 @@ typedef struct st_lex
   */
   SQL_LIST trg_table_fields;
 
-  st_lex() :result(0)
+  st_lex() :result(0), sql_command(SQLCOM_END)
   {
     extern byte *sp_lex_spfuns_key(const byte *ptr, uint *plen, my_bool first);
     hash_init(&spfuns, system_charset_info, 0, 0, 0, sp_lex_spfuns_key, 0, 0);