diff --git a/core/src/polling_monitor/ipfs_service.rs b/core/src/polling_monitor/ipfs_service.rs
index 284d25063db..f9436b851ca 100644
--- a/core/src/polling_monitor/ipfs_service.rs
+++ b/core/src/polling_monitor/ipfs_service.rs
@@ -17,7 +17,7 @@ pub fn ipfs_service(
     client: IpfsClient,
     max_file_size: u64,
     timeout: Duration,
-    concurrency_and_rate_limit: u16,
+    rate_limit: u16,
 ) -> IpfsService {
     let ipfs = IpfsServiceInner {
         client,
@@ -26,8 +26,7 @@ pub fn ipfs_service(
     };
 
     let svc = ServiceBuilder::new()
-        .rate_limit(concurrency_and_rate_limit.into(), Duration::from_secs(1))
-        .concurrency_limit(concurrency_and_rate_limit as usize)
+        .rate_limit(rate_limit.into(), Duration::from_secs(1))
         .service_fn(move |req| ipfs.cheap_clone().call_inner(req))
         .boxed();
 
diff --git a/core/src/polling_monitor/mod.rs b/core/src/polling_monitor/mod.rs
index e50979d39f2..19f30f28cda 100644
--- a/core/src/polling_monitor/mod.rs
+++ b/core/src/polling_monitor/mod.rs
@@ -161,6 +161,8 @@ where
 
                     // Object not found, push the id to the back of the queue.
                     Ok((id, None)) => {
+                        debug!(logger, "not found on polling"; "object_id" => id.to_string());
+
                         metrics.not_found.inc();
                         queue.push_back(id);
                     }
diff --git a/docs/environment-variables.md b/docs/environment-variables.md
index 635abc040c5..83ee938f059 100644
--- a/docs/environment-variables.md
+++ b/docs/environment-variables.md
@@ -78,8 +78,8 @@ those.
   may use (in bytes, defaults to 256MB).
 - `GRAPH_MAX_IPFS_CACHE_SIZE`: maximum number of files cached (defaults to 50).
 - `GRAPH_MAX_IPFS_CACHE_FILE_SIZE`: maximum size of each cached file (in bytes, defaults to 1MiB).
-- `GRAPH_IPFS_REQUEST_LIMIT`: Limits both concurrent and per second requests to IPFS for file data
-   sources. Defaults to 100.
+- `GRAPH_IPFS_REQUEST_LIMIT`: Limits the number of requests per second to IPFS for file data sources.
+   Defaults to 100.
 
 ## GraphQL
 
diff --git a/graph/src/env/mappings.rs b/graph/src/env/mappings.rs
index bb3ee2c1d30..639199d94c6 100644
--- a/graph/src/env/mappings.rs
+++ b/graph/src/env/mappings.rs
@@ -49,7 +49,7 @@ pub struct EnvVarsMapping {
     /// bytes). Defaults to 256 MiB.
     pub max_ipfs_file_bytes: usize,
 
-    /// Limits both concurrent and per second requests to IPFS for file data sources.
+    /// Limits per second requests to IPFS for file data sources.
     ///
     /// Set by the environment variable `GRAPH_IPFS_REQUEST_LIMIT`. Defaults to 100.
     pub ipfs_request_limit: u16,