diff --git a/src/routes/activitypub/activity.rs b/src/routes/activitypub/activity.rs
index dbd853f3..864f86a3 100644
--- a/src/routes/activitypub/activity.rs
+++ b/src/routes/activitypub/activity.rs
@@ -10,11 +10,7 @@ pub async fn view(
 	AuthIdentity(auth): AuthIdentity,
 	Query(query): Query<TryFetch>,
 ) -> crate::Result<JsonLD<serde_json::Value>> {
-	let aid = if id.starts_with('+') {
-		format!("https://{}", id.replacen('+', "", 1).replace('@', "/"))
-	} else {
-		ctx.aid(id.clone())
-	};
+	let aid = ctx.uri("activities", id);
 	if auth.is_local() && query.fetch && !ctx.is_local(&aid) {
 		ctx.fetch_activity(&aid).await?;
 	}
diff --git a/src/routes/activitypub/context.rs b/src/routes/activitypub/context.rs
index 382ba113..85153c96 100644
--- a/src/routes/activitypub/context.rs
+++ b/src/routes/activitypub/context.rs
@@ -8,11 +8,8 @@ pub async fn get(
 	Path(id): Path<String>,
 	AuthIdentity(auth): AuthIdentity,
 ) -> crate::Result<JsonLD<serde_json::Value>> {
-	let context = if id.starts_with('+') {
-		format!("https://{}", id.replacen('+', "", 1).replace('@', "/"))
-	} else {
-		url!(ctx, "/context/{id}")
-	};
+	let local_context_id = url!(ctx, "/context/{id}");
+	let context = ctx.uri("context", id);
 
 	let count = model::addressing::Entity::find_addressed()
 		.filter(auth.filter_condition())
@@ -20,7 +17,7 @@ pub async fn get(
 		.count(ctx.db())
 		.await?;
 
-	crate::server::builders::collection(&url!(ctx, "/context/{id}"), Some(count))
+	crate::server::builders::collection(&local_context_id, Some(count))
 }
 
 pub async fn page(
diff --git a/src/routes/activitypub/object/replies.rs b/src/routes/activitypub/object/replies.rs
index 95304943..ee484bd4 100644
--- a/src/routes/activitypub/object/replies.rs
+++ b/src/routes/activitypub/object/replies.rs
@@ -8,11 +8,8 @@ pub async fn get(
 	Path(id): Path<String>,
 	AuthIdentity(auth): AuthIdentity,
 ) -> crate::Result<JsonLD<serde_json::Value>> {
-	let oid = if id.starts_with('+') {
-		format!("https://{}", id.replacen('+', "", 1).replace('@', "/"))
-	} else {
-		ctx.oid(id.clone())
-	};
+	let replies_id = url!(ctx, "/objects/{id}/replies");
+	let oid = ctx.uri("objects", id);
 
 	let count = model::addressing::Entity::find_addressed()
 		.filter(auth.filter_condition())
@@ -20,7 +17,7 @@ pub async fn get(
 		.count(ctx.db())
 		.await?;
 
-	crate::server::builders::collection(&url!(ctx, "/objects/{id}/replies"), Some(count))
+	crate::server::builders::collection(&replies_id, Some(count))
 }
 
 pub async fn page(
@@ -29,14 +26,11 @@ pub async fn page(
 	Query(page): Query<Pagination>,
 	AuthIdentity(auth): AuthIdentity,
 ) -> crate::Result<JsonLD<serde_json::Value>> {
-	let oid = if id.starts_with('+') {
-		format!("https://{}", id.replacen('+', "", 1).replace('@', "/"))
-	} else {
-		ctx.oid(id.clone())
-	};
+	let page_id = url!(ctx, "/objects/{id}/replies/page");
+	let oid = ctx.uri("objects", id);
 
 	crate::server::builders::paginate(
-		url!(ctx, "/objects/{id}/replies/page"),
+		page_id,
 		Condition::all()
 			.add(auth.filter_condition())
 			.add(model::object::Column::InReplyTo.eq(oid)),
diff --git a/src/server/context.rs b/src/server/context.rs
index bf1b7658..c50ee54d 100644
--- a/src/server/context.rs
+++ b/src/server/context.rs
@@ -97,7 +97,14 @@ impl Context {
 	}
 
 	pub fn uri(&self, entity: &str, id: String) -> String {
-		if id.starts_with("http") { id } else {
+		if id.starts_with("http") { // ready-to-use id
+			id
+		} else if id.starts_with('+') { // compacted id
+			id
+				.replacen('+', "https://", 1)
+				.replace('@', "/")
+				.replace("//", "/@") // oops my method sucks!! TODO
+		} else { // bare local id
 			format!("{}{}/{}/{}", self.0.protocol, self.0.domain, entity, id)
 		}
 	}