diff --git a/mastodon/src/main/java/org/joinmastodon/android/api/session/AccountSession.java b/mastodon/src/main/java/org/joinmastodon/android/api/session/AccountSession.java
index f8b201bda..30acb30d6 100644
--- a/mastodon/src/main/java/org/joinmastodon/android/api/session/AccountSession.java
+++ b/mastodon/src/main/java/org/joinmastodon/android/api/session/AccountSession.java
@@ -99,7 +99,7 @@ public class AccountSession{
 	public Uri getInstanceUri() {
 		return new Uri.Builder()
 				.scheme("https")
-				.authority(getInstance().map(i -> i.uri).orElse(domain))
+				.authority(getInstance().map(i -> i.normalizedUri).orElse(domain))
 				.build();
 	}
 }
diff --git a/mastodon/src/main/java/org/joinmastodon/android/fragments/onboarding/InstanceRulesFragment.java b/mastodon/src/main/java/org/joinmastodon/android/fragments/onboarding/InstanceRulesFragment.java
index 42583c5ef..c8efd7f80 100644
--- a/mastodon/src/main/java/org/joinmastodon/android/fragments/onboarding/InstanceRulesFragment.java
+++ b/mastodon/src/main/java/org/joinmastodon/android/fragments/onboarding/InstanceRulesFragment.java
@@ -50,7 +50,6 @@ public class InstanceRulesFragment extends ToolbarFragment implements ProvidesAs
 	private ElevationOnScrollListener onScrollListener;
 
 	private static final int RULES_REQUEST=376;
-	private String domain;
 
 	@Override
 	public void onCreate(Bundle savedInstanceState){
@@ -63,10 +62,6 @@ public class InstanceRulesFragment extends ToolbarFragment implements ProvidesAs
 		super.onAttach(activity);
 		setNavigationBarColor(UiUtils.getThemeColor(activity, R.attr.colorWindowBackground));
 		instance=Parcels.unwrap(getArguments().getParcelable("instance"));
-		// akkoma says uri is "https://example.social" while just "example.social" on mastodon
-		domain = instance.uri
-				.replaceFirst("^https://", "")
-				.replaceFirst("/$", "");
 		setTitle(R.string.instance_rules_title);
 	}
 
@@ -142,7 +137,7 @@ public class InstanceRulesFragment extends ToolbarFragment implements ProvidesAs
 	public void onProvideAssistContent(AssistContent assistContent) {
 		assistContent.setWebUri(new Uri.Builder()
 				.scheme("https")
-				.authority(domain)
+				.authority(instance.normalizedUri)
 				.path("/about")
 				.build());
 	}
diff --git a/mastodon/src/main/java/org/joinmastodon/android/model/Instance.java b/mastodon/src/main/java/org/joinmastodon/android/model/Instance.java
index cd8e94d99..5ceaeb72e 100644
--- a/mastodon/src/main/java/org/joinmastodon/android/model/Instance.java
+++ b/mastodon/src/main/java/org/joinmastodon/android/model/Instance.java
@@ -88,6 +88,9 @@ public class Instance extends BaseModel{
 
 	public PleromaPollLimits pollLimits;
 
+	/** like uri, but always without scheme and trailing slash */
+	public transient String normalizedUri;
+
 	@Override
 	public void postprocess() throws ObjectValidationException{
 		super.postprocess();
@@ -97,6 +100,10 @@ public class Instance extends BaseModel{
 			rules=Collections.emptyList();
 		if(shortDescription==null)
 			shortDescription="";
+		// akkoma says uri is "https://example.social" while just "example.social" on mastodon
+		normalizedUri = uri
+				.replaceFirst("^https://", "")
+				.replaceFirst("/$", "");
 	}
 
 	@Override