diff --git a/Makefile b/Makefile
index ef15f22e67..6a1111df1f 100644
--- a/Makefile
+++ b/Makefile
@@ -42,9 +42,9 @@ lint:
 
 ruleguard:
 	@echo "Running $@ check"
-	@${GOPATH}/bin/ruleguard -rules ruleguard.rules.go ./internal/... || true
-	@${GOPATH}/bin/ruleguard -rules ruleguard.rules.go ./cmd/... || true
-	@${GOPATH}/bin/ruleguard -rules ruleguard.rules.go ./test/... || true
+	@${GOPATH}/bin/ruleguard -rules ruleguard.rules.go ./internal/...
+	@${GOPATH}/bin/ruleguard -rules ruleguard.rules.go ./cmd/...
+	@${GOPATH}/bin/ruleguard -rules ruleguard.rules.go ./test/...
 
 verifiers: get-check-deps fmt lint ruleguard
 
diff --git a/internal/master/tso/global_allocator.go b/internal/master/tso/global_allocator.go
index ea0c697c30..5c94acb6fd 100644
--- a/internal/master/tso/global_allocator.go
+++ b/internal/master/tso/global_allocator.go
@@ -87,7 +87,7 @@ func (gta *GlobalTSOAllocator) GenerateTSO(count uint32) (uint64, error) {
 
 	for i := 0; i < maxRetryCount; i++ {
 		current := (*atomicObject)(atomic.LoadPointer(&gta.tso.TSO))
-		if current == nil || current.physical == typeutil.ZeroTime {
+		if current == nil || current.physical.Equal(typeutil.ZeroTime) {
 			// If it's leader, maybe SyncTimestamp hasn't completed yet
 			log.Println("sync hasn't completed yet, wait for a while")
 			time.Sleep(200 * time.Millisecond)
diff --git a/internal/master/tso/global_allocator_test.go b/internal/master/tso/global_allocator_test.go
index 72e4711696..9db77177e6 100644
--- a/internal/master/tso/global_allocator_test.go
+++ b/internal/master/tso/global_allocator_test.go
@@ -35,7 +35,7 @@ func TestGlobalTSOAllocator_GenerateTSO(t *testing.T) {
 	for i := 0; i < count; i++ {
 		ts, _ := GTsoAllocator.GenerateTSO(perCount)
 		physical, logical := tsoutil.ParseTS(ts)
-		if lastPhysical == physical {
+		if lastPhysical.Equal(physical) {
 			diff := logical - lastLogical
 			assert.Equal(t, uint64(perCount), diff)
 		}
diff --git a/internal/proxy/timetick_test.go b/internal/proxy/timetick_test.go
index a78894ecf8..ab092077a5 100644
--- a/internal/proxy/timetick_test.go
+++ b/internal/proxy/timetick_test.go
@@ -76,7 +76,7 @@ func TestTimeTick(t *testing.T) {
 				return
 			}
 			if tsm.Timestamp <= lastTimestamp {
-				t.Fatalf("current = %d, last = %d", uint64(tsm.Timestamp), uint64(lastTimestamp))
+				t.Fatalf("current = %d, last = %d", tsm.Timestamp, lastTimestamp)
 			}
 			t.Log("current = ", tsm.Timestamp)
 			lastTimestamp = tsm.Timestamp
diff --git a/internal/util/flowgraph/flow_graph_test.go b/internal/util/flowgraph/flow_graph_test.go
index 0aa4ff9aff..9f170eb2bb 100644
--- a/internal/util/flowgraph/flow_graph_test.go
+++ b/internal/util/flowgraph/flow_graph_test.go
@@ -137,7 +137,7 @@ func sendMsgFromCmd(ctx context.Context, fg *TimeTickedFlowGraph) {
 				return
 			}
 			// assert result
-			if res != math.Pow(num, 2)+math.Sqrt(num) {
+			if res-(math.Pow(num, 2)+math.Sqrt(num)) > 0.000001 {
 				fmt.Println(res)
 				fmt.Println(math.Pow(num, 2) + math.Sqrt(num))
 				panic("wrong answer")