diff --git a/internal/configuration/settings/updater.go b/internal/configuration/settings/updater.go
index 1b7d52a4..c3564550 100644
--- a/internal/configuration/settings/updater.go
+++ b/internal/configuration/settings/updater.go
@@ -58,7 +58,7 @@ func (u Updater) Validate() (err error) {
 		}
 
 		if provider == providers.Protonvpn {
-			authenticatedAPI := *u.ProtonUsername == "" || *u.ProtonPassword == ""
+			authenticatedAPI := *u.ProtonUsername != "" || *u.ProtonPassword != ""
 			if authenticatedAPI {
 				switch {
 				case *u.ProtonUsername == "":