diff --git a/include/mariadb_com.h b/include/mariadb_com.h
index 340568d6..57e48925 100644
--- a/include/mariadb_com.h
+++ b/include/mariadb_com.h
@@ -404,30 +404,6 @@ struct rand_struct {
   double max_value_dbl;
 };
 
-  /* The following is for user defined functions */
-
-enum Item_result {STRING_RESULT,REAL_RESULT,INT_RESULT,ROW_RESULT,DECIMAL_RESULT};
-
-typedef struct st_udf_args
-{
-  unsigned int arg_count;		/* Number of arguments */
-  enum Item_result *arg_type;		/* Pointer to item_results */
-  char **args;				/* Pointer to argument */
-  unsigned long *lengths;		/* Length of string arguments */
-  char *maybe_null;			/* Set to 1 for all maybe_null args */
-} UDF_ARGS;
-
-  /* This holds information about the result */
-
-typedef struct st_udf_init
-{
-  my_bool maybe_null;			/* 1 if function can return NULL */
-  unsigned int decimals;		/* for real functions */
-  unsigned int max_length;		/* For string functions */
-  char	  *ptr;				/* free pointer for function data */
-  my_bool const_item;			/* 0 if result is independent of arguments */
-} UDF_INIT;
-
 /* Connection types */
 #define MARIADB_CONNECTION_UNIXSOCKET   0
 #define MARIADB_CONNECTION_TCP          1