diff --git a/src/page_service.rs b/src/page_service.rs
index 9ed495f924..cec5eace0f 100644
--- a/src/page_service.rs
+++ b/src/page_service.rs
@@ -208,10 +208,12 @@ impl FeMessage {
 pub fn thread_main() {
 
     // Create a new thread pool
+    //
+    // FIXME: keep it single-threaded for now, make it easier to debug with gdb,
+    // and we're not concerned with performance yet.
     //let runtime = runtime::Runtime::new().unwrap();
     let runtime = runtime::Builder::new_current_thread().enable_all().build().unwrap();
 
-
     let listen_address = "127.0.0.1:5430";
     info!("Starting page server on {}", listen_address);