diff --git a/app/app.go b/app/app.go
index 0e499bc..2c04470 100644
--- a/app/app.go
+++ b/app/app.go
@@ -1,6 +1,7 @@
 package app
 
 import (
+	"fmt"
 	"net"
 
 	"dnsupdater/provider/manager"
@@ -29,6 +30,10 @@ func NewApp(config *Config) (*App, error) {
 
 	l := resolver.Get(config.Services.IPLookup)
 
+	if l == nil {
+		return nil, fmt.Errorf("Failed to load lookup service: %s", config.Services.IPLookup)
+	}
+
 	return &App{
 		ProviderManager: providerMgr,
 		IPLookupService: resolver.Get(config.Services.IPLookup),