diff --git a/wgps/src/lib.rs b/wgps/src/lib.rs
index 7cda166..aeb03c6 100644
--- a/wgps/src/lib.rs
+++ b/wgps/src/lib.rs
@@ -64,11 +64,7 @@ where
         progress_id: u64,
         range: &Range3d<MCL, MCC, MPL, S>,
         ignore: Option<QueryIgnoreParams>,
-    ) -> impl Future<
-        Output = impl Producer<
-            Item = Result<StoreEvent<MCL, MCC, MPL, N, S, PD, AT>, ResumptionFailedError>,
-        >,
-    >;
+    ) -> Result<impl Producer<Item = StoreEvent<MCL, MCC, MPL, N, S, PD, AT>>, ResumptionFailedError>;
 
     /// Summarise a [`Range3d`] as a [fingerprint](https://willowprotocol.org/specs/3d-range-based-set-reconciliation/index.html#d3rbsr_fp).
     fn summarise(&self, range: Range3d<MCL, MCC, MPL, S>) -> impl Future<Output = FP>;