diff --git a/src/Model/Friction/Friction.py b/src/Model/Friction/Friction.py
index ee106afec3b6e27f195230d99e3107ddd42a5a00..45e17cc984f3ae8813317076ff21829b97564a28 100644
--- a/src/Model/Friction/Friction.py
+++ b/src/Model/Friction/Friction.py
@@ -43,12 +43,12 @@ class Friction(SQLSubModel):
         execute("""
           CREATE TABLE friction(
             id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
-            ind INTERGER NOT NULL,
+            ind INTEGER NOT NULL,
             begin_kp REAL NOT NULL,
             end_kp REAL NOT NULL,
             reach INTEGER NOT NULL,
-            begin_strickler INTERGER,
-            end_strickler INTERGER,
+            begin_strickler INTEGER NOT NULL,
+            end_strickler INTEGER NOT NULL,
             FOREIGN KEY(reach) REFERENCES river_reach(id),
             FOREIGN KEY(begin_strickler) REFERENCES stricklers(id),
             FOREIGN KEY(end_strickler) REFERENCES stricklers(id)