diff --git a/sql/udf_example.c b/sql/udf_example.c
index 5165a577555..6c07a929b04 100644
--- a/sql/udf_example.c
+++ b/sql/udf_example.c
@@ -1115,15 +1115,15 @@ my_bool check_const_len_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
   }
   if (args->args[0] == 0)
   {
-    initid->ptr= "Not constant";
+    initid->ptr= (char*)"Not constant";
   }
   else if(strlen(args->args[0]) == args->lengths[0])
   {
-    initid->ptr= "Correct length";
+    initid->ptr= (char*)"Correct length";
   }
   else
   {
-    initid->ptr= "Wrong length";
+    initid->ptr= (char*)"Wrong length";
   }
   initid->max_length = 100;
   return 0;
diff --git a/sql/udf_example.def b/sql/udf_example.def
index 7a87147d7b6..7c69b681f8b 100644
--- a/sql/udf_example.def
+++ b/sql/udf_example.def
@@ -23,3 +23,4 @@ EXPORTS
   avgcost
   is_const
   is_const_init
+  check_const_len