diff --git a/cmd/coronafana/coronafana.go b/cmd/coronafana/coronafana.go
index c0fa236..981d3a5 100644
--- a/cmd/coronafana/coronafana.go
+++ b/cmd/coronafana/coronafana.go
@@ -13,10 +13,14 @@ import (
 func main() {
 	var cfg config.Config
 	var cr coronafana.Coronafana
+	var err error
 
-	cfg.GetConfig()
+	err = cfg.GetConfig()
+	if err != nil {
+		log.Fatalln(err)
+	}
 
-	cr, err := coronafana.GetData(cfg)
+	cr, err = coronafana.GetData(cfg)
 	if err != nil {
 		log.Fatalln(err)
 	}
diff --git a/src/coronafana/main.go b/src/coronafana/main.go
index 4f8cefc..658911a 100644
--- a/src/coronafana/main.go
+++ b/src/coronafana/main.go
@@ -20,6 +20,11 @@ func GetData(cfg config.Config) (cr Coronafana, err error) {
 
 	log.Println("Getting JSON file ...")
 
+	if cfg.CoronaURL == "" {
+		err = fmt.Errorf("CoronaURL is not defined")
+		return
+	}
+
 	resp, err := client.Get(cfg.CoronaURL)
 	if err != nil {
 		return