diff --git a/rslib/src/backend/config.rs b/rslib/src/backend/config.rs
index 9bc1140a2..88bc34601 100644
--- a/rslib/src/backend/config.rs
+++ b/rslib/src/backend/config.rs
@@ -58,8 +58,14 @@ impl From<StringKeyProto> for StringKey {
 
 impl crate::services::ConfigService for Collection {
     fn get_config_json(&mut self, input: generic::String) -> Result<generic::Json> {
-        let val: Option<Value> = self.get_config_optional(input.val.as_str());
-        val.or_not_found(input.val)
+        let key = input.val.as_str();
+        let val: Option<Value> = self.get_config_optional(key);
+        let default = match key {
+            "reviewerStorage" => Some(serde_json::from_str("{}").unwrap()),
+            _ => None,
+        };
+        val.or(default)
+            .or_not_found(key)
             .and_then(|v| serde_json::to_vec(&v).map_err(Into::into))
             .map(Into::into)
     }
diff --git a/ts/routes/reviewer/reviewer.ts b/ts/routes/reviewer/reviewer.ts
index 2c2e5a612..6185d1b0c 100644
--- a/ts/routes/reviewer/reviewer.ts
+++ b/ts/routes/reviewer/reviewer.ts
@@ -41,7 +41,7 @@ export class ReviewerState {
 
     async onReady() {
         this.iframe!.style.visibility = "visible";
-        const { json } = await getConfigJson({ val: "reviewer_storage" });
+        const { json } = await getConfigJson({ val: "reviewerStorage" });
         this.sendInnerRequest({ type: "setstorage", json_buffer: json });
         this.showQuestion(null);
         addEventListener("message", this.onMessage.bind(this));
@@ -64,7 +64,7 @@ export class ReviewerState {
             }
             case "setstorage": {
                 setConfigJson({
-                    key: "reviewer_storage",
+                    key: "reviewerStorage",
                     valueJson: e.data.json_buffer,
                     undoable: false,
                 });