diff --git a/dropall.sql b/dropall.sql
index 4cffbb8..50a3822 100644
--- a/dropall.sql
+++ b/dropall.sql
@@ -1,3 +1,5 @@
+DROP TYPE echelon;
+DROP TYPE grade;
 DROP TABLE Personnel;
 DROP TABLE Doctorant;
 DROP TABLE Scientifique;