diff --git a/advlabdb/adminModelViews.py b/advlabdb/adminModelViews.py
index 0233f1a..c07d721 100644
--- a/advlabdb/adminModelViews.py
+++ b/advlabdb/adminModelViews.py
@@ -405,9 +405,7 @@ def groupQueryFactory():
 def partFilterOptions():
     if has_request_context():
         parts = Part.query.filter(Part.semester == userActiveSemester())
-        return ((part.id, f"{part.program.repr()}{part.number}") for part in parts)
-    else:
-        return
+        return tuple((part.id, f"{part.program.repr()}{part.number}") for part in parts)
 
 
 class PartStudentView(SecureAdminModelView):
@@ -497,7 +495,7 @@ class GroupView(SecureAdminModelView):
     class ProgramFilter(FilterEqual):
         def get_options(self, view):
             programs = Program.query
-            return ((program.id, program.repr()) for program in programs)
+            return tuple((program.id, program.repr()) for program in programs)
 
         def apply(self, query, value, alias=None):
             return query.filter(self.column.program_id == int(value))
@@ -725,7 +723,7 @@ assistantBlankText = "Auto assign if experiment has only one assistant"
 
 def experimentFilterOptions():
     activeExperiments = Experiment.query.filter(Experiment.active == True)
-    return (
+    return tuple(
         (
             f"{activeExperiment.number},{activeExperiment.program.id}",
             f"{activeExperiment.number} {activeExperiment.program.repr()}",
@@ -850,7 +848,7 @@ def groupExperimentQueryFactory():
 
 def assistantFilterOptions():
     assistants = Assistant.query.filter(Assistant.user.has(User.active == True))
-    return ((assistant.id, assistant.repr()) for assistant in assistants)
+    return tuple((assistant.id, assistant.repr()) for assistant in assistants)
 
 
 class AppointmentView(SecureAdminModelView):
@@ -979,7 +977,7 @@ class ExperimentMarkView(SecureAdminModelView):
     class AdminFilter(FilterEqual):
         def get_options(self, view):
             admins = Admin.query.filter(Admin.user.has(User.active == True))
-            return ((admin.id, admin.repr()) for admin in admins)
+            return tuple((admin.id, admin.repr()) for admin in admins)
 
         def apply(self, query, value, alias=None):
             return query.filter(self.column.admin_id == int(value))
@@ -1009,7 +1007,7 @@ class ExperimentMarkView(SecureAdminModelView):
     class ProgramFilter(FilterEqual):
         def get_options(self, view):
             programs = Program.query
-            return ((program.id, program.repr()) for program in programs)
+            return tuple((program.id, program.repr()) for program in programs)
 
         def apply(self, query, value, alias=None):
             return query.filter(self.column.part_student.has(PartStudent.part.has(Part.program_id == int(value))))
@@ -1024,7 +1022,7 @@ class ExperimentMarkView(SecureAdminModelView):
     class SemesterFilter(FilterEqual):
         def get_options(self, view):
             semesters = Semester.query.order_by(Semester.id.desc())
-            return ((semester.id, semester.repr()) for semester in semesters)
+            return tuple((semester.id, semester.repr()) for semester in semesters)
 
         def apply(self, query, value, alias=None):
             return query.filter(