diff --git a/src/db/migration/V20200508_0959__mantis18913.sql b/src/db/migration/V20200508_0959__mantis18913.sql
new file mode 100644
index 000000000..fb7ce190b
--- /dev/null
+++ b/src/db/migration/V20200508_0959__mantis18913.sql
@@ -0,0 +1,7 @@
+declare
+    object_exists exception;
+    pragma exception_init (object_exists , -00955);
+begin
+	execute immediate 'update empresa set cst_gratuidade = ''CST40'' where cst_gratuidade is null';
+    exception when object_exists then null;	
+end;
\ No newline at end of file