diff --git a/backend/allowance_planner.db3.backup.1 b/backend/allowance_planner.db3.backup.1
new file mode 100644
index 0000000..dd398a8
Binary files /dev/null and b/backend/allowance_planner.db3.backup.1 differ
diff --git a/backend/api_test.go b/backend/api_test.go
index 06d4628..d0fe142 100644
--- a/backend/api_test.go
+++ b/backend/api_test.go
@@ -605,6 +605,36 @@ func TestCompleteTask(t *testing.T) {
 	}
 }
 
+func TestCompleteTaskWithNoWeights(t *testing.T) {
+	e := startServer(t)
+	taskId := createTestTaskWithAmount(e, 101)
+
+	e.GET("/tasks").Expect().Status(200).JSON().Array().Length().IsEqual(1)
+
+	// Ensure main allowance has no weight
+	e.PUT("/user/1/allowance/0").WithJSON(UpdateAllowanceRequest{
+		Weight: 0,
+	}).Expect().Status(200)
+
+	// Complete the task
+	e.POST("/task/" + strconv.Itoa(taskId) + "/complete").Expect().Status(200)
+
+	// Verify the task is marked as completed
+	e.GET("/task/" + strconv.Itoa(taskId)).Expect().Status(404)
+
+	// Verify the allowances are updated for user 1
+	allowances := e.GET("/user/1/allowance").Expect().Status(200).JSON().Array()
+	allowances.Length().IsEqual(1)
+	allowances.Value(0).Object().Value("id").Number().IsEqual(0)
+	allowances.Value(0).Object().Value("progress").Number().InDelta(101.00, 0.01)
+
+	// And also for user 2
+	allowances = e.GET("/user/2/allowance").Expect().Status(200).JSON().Array()
+	allowances.Length().IsEqual(1)
+	allowances.Value(0).Object().Value("id").Number().IsEqual(0)
+	allowances.Value(0).Object().Value("progress").Number().InDelta(101.00, 0.01)
+}
+
 func TestCompleteTaskAllowanceWeightsSumTo0(t *testing.T) {
 	e := startServer(t)
 	taskId := createTestTaskWithAmount(e, 101)
@@ -643,6 +673,11 @@ func TestCompleteAllowance(t *testing.T) {
 	createTestTaskWithAmount(e, 100)
 	createTestAllowance(e, "Test Allowance 1", 100, 50)
 
+	// Update base allowance
+	e.PUT("/user/1/allowance/0").WithJSON(UpdateAllowanceRequest{
+		Weight: 0,
+	}).Expect().Status(200)
+
 	// Complete the task
 	e.POST("/task/1/complete").Expect().Status(200)
 
diff --git a/backend/migrations/3_change_weight_default.sql b/backend/migrations/3_change_weight_default.sql
new file mode 100644
index 0000000..aa5d336
--- /dev/null
+++ b/backend/migrations/3_change_weight_default.sql
@@ -0,0 +1,4 @@
+alter table users rename column weight to weight_old;
+alter table users add column weight real not null default 10.0;
+update users set weight = weight_old;
+alter table users drop column weight_old;