diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 529438e..a74a454 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -27,5 +27,5 @@ repos:
       name: reuse
       entry: reuse lint
       language: system
-      exclude: .*
+      exclude: ^(venv).*$
       always_run: true
diff --git a/ki/models.py b/ki/models.py
index 65961a1..2b78912 100644
--- a/ki/models.py
+++ b/ki/models.py
@@ -33,7 +33,7 @@ class Profile(db.Model):
     volunteerwork = Column(String(4000), default="")
     freetext = Column(String(4000), default="")
 
-    availability_status = Column(Boolean, default=False)
+    availability_status = Column(Boolean, default=False, nullable=False)
     availability_text = Column(String(4000), default="")
     availability_hours_per_week = Column(Integer, default=0)