diff --git a/mastodon/src/main/java/org/joinmastodon/android/api/MastodonAPIController.java b/mastodon/src/main/java/org/joinmastodon/android/api/MastodonAPIController.java
index 23be5d4b97..9045842ac3 100644
--- a/mastodon/src/main/java/org/joinmastodon/android/api/MastodonAPIController.java
+++ b/mastodon/src/main/java/org/joinmastodon/android/api/MastodonAPIController.java
@@ -91,7 +91,11 @@ public <T> void submitRequest(final MastodonAPIRequest<T> req){
 		final boolean isBad = host == null || badDomains.stream().anyMatch(h -> h.equalsIgnoreCase(host) || host.toLowerCase().endsWith("." + h));
 		thread.postRunnable(()->{
 			try{
-//				if (isBad) throw new IllegalArgumentException();
+				if(isBad){
+					Log.i(TAG, "submitRequest: refusing to connect to bad domain: " + host);
+					throw new IllegalArgumentException("Failed to connect to domain");
+				}
+
 				if(req.canceled)
 					return;
 				Request.Builder builder=new Request.Builder()