diff --git a/iphone/Maps/Core/Ads/Mopub/MopubBanner.swift b/iphone/Maps/Core/Ads/Mopub/MopubBanner.swift
index 9b44b9f8f1..5fae456135 100644
--- a/iphone/Maps/Core/Ads/Mopub/MopubBanner.swift
+++ b/iphone/Maps/Core/Ads/Mopub/MopubBanner.swift
@@ -149,7 +149,7 @@ final class MopubBanner: NSObject, Banner {
     let config = MPStaticNativeAdRenderer.rendererConfiguration(with: settings)!
     request = MPNativeAdRequest(adUnitIdentifier: placementID, rendererConfigurations: [config])
     let targeting = MPNativeAdRequestTargeting()
-    targeting.keywords = "user_lang:\(AppInfo.shared().twoLetterLanguageId)"
+    targeting.keywords = "user_lang:\(AppInfo.shared().twoLetterLanguageId ?? "")"
     targeting.desiredAssets = [kAdTitleKey, kAdTextKey, kAdIconImageKey, kAdCTATextKey]
     if let location = MWMLocationManager.lastLocation() {
       targeting.location = location