diff --git a/src/Model/HydraulicStructures/Basic/HydraulicStructures.py b/src/Model/HydraulicStructures/Basic/HydraulicStructures.py
index e32b9d45..771629f9 100644
--- a/src/Model/HydraulicStructures/Basic/HydraulicStructures.py
+++ b/src/Model/HydraulicStructures/Basic/HydraulicStructures.py
@@ -81,7 +81,7 @@ class BasicHS(SQLSubModel):
                 cls._db_update_to_0_1_0(execute, data)
 
         if major == "0" and minor == "1":
-            if release < 2:
+            if int(release) < 2:
                 execute(
                     "ALTER TABLE hydraulic_structures_basic " +
                     "ADD COLUMN deleted BOOLEAN NOT NULL DEFAULT FALSE"
diff --git a/src/Model/Stricklers/Stricklers.py b/src/Model/Stricklers/Stricklers.py
index feda6801..4a18145c 100644
--- a/src/Model/Stricklers/Stricklers.py
+++ b/src/Model/Stricklers/Stricklers.py
@@ -67,7 +67,7 @@ class Stricklers(SQLSubModel):
             cls._db_update_to_0_1_0(execute, data)
 
         if major == "0" and minor == "1":
-            if release < 2:
+            if int(release) < 2:
                 execute(
                     "ALTER TABLE stricklers " +
                     "ADD COLUMN deleted BOOLEAN NOT NULL DEFAULT FALSE"