diff --git a/lib/Class.js b/lib/Class.js
index 2007c73..b579d1b 100644
--- a/lib/Class.js
+++ b/lib/Class.js
@@ -244,6 +244,11 @@ class Class {
 		if (!validTypes.includes(u.type))
 			throw new Error('Invalid user type');
 
+		this.teachers = await this.getTeachers();
+
+		if (u.type === 'account' && this.teachers.length < 2)
+			throw new Error('Can\'t remove last teacher');
+
 		const sql = `
 			delete from ${u.type}ClassLink
 			where
diff --git a/routes/singleClass.js b/routes/singleClass.js
index f5ce99d..9e2b8e9 100644
--- a/routes/singleClass.js
+++ b/routes/singleClass.js
@@ -240,8 +240,18 @@ router.post('/:id/:userType(members|teachers)/:userId/remove',
 		const u = await new User(req.db, null, req.params.userId);
 		const userType = req.params.userType;
 
-		await c.removeUser(u);
-		return res.redirect(`/admin/class/${c.id}/${userType}`);
+		try {
+			await c.removeUser(u);
+			return res.redirect(`/admin/class/${c.id}/${userType}`);
+		} catch (e) {
+			console.error(e);
+			return res.render('error', {
+				title: 'Stratos - Error',
+				current: 'Classes',
+				name: req.session.fullName,
+				msg: `Can not remove this user: ${e.message}`
+			});
+		}
 	}
 );