diff --git a/rust_rpc/src/main.rs b/rust_rpc/src/main.rs
index 1e80e442..af0211ae 100644
--- a/rust_rpc/src/main.rs
+++ b/rust_rpc/src/main.rs
@@ -552,7 +552,7 @@ impl Downloader {
                         return Err(e);
                     }
                     tokio::time::sleep(tokio::time::Duration::from_millis(
-                        RETRY_BACKOFF_MS * retries as u64,
+                        RETRY_BACKOFF_MS * (2_u64.pow(retries as u32 - 1)),
                     ))
                     .await;
                 }