diff --git a/proxy/blackhole/blackhole.go b/proxy/blackhole/blackhole.go
index 18b920b2..5b7d9fd4 100644
--- a/proxy/blackhole/blackhole.go
+++ b/proxy/blackhole/blackhole.go
@@ -10,7 +10,7 @@ import (
 	"v2ray.com/core/transport/ray"
 )
 
-// Handler is an outbound connection that sliently swallow the entire payload.
+// Handler is an outbound connection that silently swallow the entire payload.
 type Handler struct {
 	response ResponseConfig
 }
diff --git a/transport/internet/tcp/dialer.go b/transport/internet/tcp/dialer.go
index 939f088e..7fa4eeab 100644
--- a/transport/internet/tcp/dialer.go
+++ b/transport/internet/tcp/dialer.go
@@ -48,7 +48,7 @@ func Dial(ctx context.Context, dest v2net.Destination) (internet.Connection, err
 		if tcpSettings.HeaderSettings != nil {
 			headerConfig, err := tcpSettings.HeaderSettings.GetInstance()
 			if err != nil {
-				return nil, errors.Base(err).Message("Interent|TCP: Failed to get header settings.")
+				return nil, errors.Base(err).Message("Internet|TCP: Failed to get header settings.")
 			}
 			auth, err := internet.CreateConnectionAuthenticator(headerConfig)
 			if err != nil {
diff --git a/transport/internet/tcp_hub.go b/transport/internet/tcp_hub.go
index 7a8713e9..dc8468b4 100644
--- a/transport/internet/tcp_hub.go
+++ b/transport/internet/tcp_hub.go
@@ -51,7 +51,7 @@ func ListenTCP(address v2net.Address, port v2net.Port, callback ConnectionHandle
 	}
 	listener, err := listenFunc(address, port, options)
 	if err != nil {
-		return nil, errors.Base(err).Message("Interent|TCPHub: Failed to listen on address: ", address, ":", port)
+		return nil, errors.Base(err).Message("Internet|TCPHub: Failed to listen on address: ", address, ":", port)
 	}
 
 	hub := &TCPHub{
diff --git a/v2ray.go b/v2ray.go
index 2bc77552..74ac10a8 100644
--- a/v2ray.go
+++ b/v2ray.go
@@ -8,6 +8,8 @@ import (
 	"v2ray.com/core/app/dns"
 	"v2ray.com/core/app/log"
 	"v2ray.com/core/app/proxyman"
+	"v2ray.com/core/common"
+	"v2ray.com/core/common/errors"
 	"v2ray.com/core/common/net"
 )
 
@@ -59,15 +61,14 @@ func NewPoint(config *Config) (*Point, error) {
 		}
 	}
 
-	logger := log.FromSpace(space)
-	if logger == nil {
+	if log.FromSpace(space) == nil {
 		l, err := app.CreateAppFromConfig(ctx, &log.Config{
 			ErrorLogType:  log.LogType_Console,
 			ErrorLogLevel: log.LogLevel_Warning,
 			AccessLogType: log.LogType_None,
 		})
 		if err != nil {
-			return nil, err
+			return nil, errors.Base(err).Message("Core: Failed apply default log settings.")
 		}
 		space.AddApplication(l)
 	}
@@ -78,7 +79,9 @@ func NewPoint(config *Config) (*Point, error) {
 		if err != nil {
 			return nil, err
 		}
-		space.AddApplication(o)
+		if err := space.AddApplication(o); err != nil {
+			return nil, errors.Base(err).Message("Core: Failed to add default outbound handler manager.")
+		}
 		outboundHandlerManager = o.(proxyman.OutboundHandlerManager)
 	}
 
@@ -88,12 +91,13 @@ func NewPoint(config *Config) (*Point, error) {
 		if err != nil {
 			return nil, err
 		}
-		space.AddApplication(o)
+		if err := space.AddApplication(o); err != nil {
+			return nil, errors.Base(err).Message("Core: Failed to add default inbound handler manager.")
+		}
 		inboundHandlerManager = o.(proxyman.InboundHandlerManager)
 	}
 
-	dnsServer := dns.FromSpace(space)
-	if dnsServer == nil {
+	if dns.FromSpace(space) == nil {
 		dnsConfig := &dns.Config{
 			NameServers: []*net.Endpoint{{
 				Address: net.NewIPOrDomain(net.LocalHostDomain),
@@ -103,8 +107,7 @@ func NewPoint(config *Config) (*Point, error) {
 		if err != nil {
 			return nil, err
 		}
-		space.AddApplication(d)
-		dnsServer = d.(dns.Server)
+		common.Must(space.AddApplication(d))
 	}
 
 	disp := dispatcher.FromSpace(space)