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diff --git a/perf.data.old b/perf.data.old
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diff --git a/perf.data.opt b/perf.data.opt
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diff --git a/swarm/src/connection.rs b/swarm/src/connection.rs
index ec40a206e65..9b3e90272a3 100644
--- a/swarm/src/connection.rs
+++ b/swarm/src/connection.rs
@@ -924,8 +924,20 @@ mod tests {
     #[ignore]
     fn repoll_with_active_protocols() {
         fn run_benchmark(protcol_count: usize, iters: usize) {
-            const PROTOCOLS: &str =
-                "/a /b /c /d /e /f /g /h /i /j /k /l /m /n /o /p /q /r /s /t /u /v /w /x /y /z";
+            // we need longer protocol names
+            macro_rules! protocols {
+                ($($name:ident)*) => {
+                    concat!(
+                        $(
+                            "/",
+                            stringify!($name),
+                            "ffffffffffffffffffffff ",
+                        )*
+                    )
+                }
+            }
+
+            const PROTOCOLS: &str = protocols!(a b c d e f g h i j k l m n o p q r s t u v);
             let protocols = PROTOCOLS.split(' ').collect::<Vec<_>>();
 
             let mut connection = Connection::new(
diff --git a/swarm/src/handler.rs b/swarm/src/handler.rs
index a7576992144..15165b49c68 100644
--- a/swarm/src/handler.rs
+++ b/swarm/src/handler.rs
@@ -338,22 +338,31 @@ impl<'a> ProtocolsChange<'a> {
         temp_owner: &'a mut Vec<StreamProtocol>,
     ) -> impl Iterator<Item = Self> {
         temp_owner.clear();
-        existing_protocols.values_mut().for_each(|v| *v = false);
+        // to avoid looping trough the map to just set the booleans we use the fact that all of
+        // the booleans in the map have same value
+        let valid_value = !existing_protocols.values().next().copied().unwrap_or(false);
+        let mut count = Some(existing_protocols.len());
         for new_protocol in new_protocols {
             *existing_protocols
                 .entry(AsStrHashEq(new_protocol))
                 .or_insert_with_key(|k| {
                     temp_owner.extend(StreamProtocol::try_from_owned(k.0.as_ref().to_owned()).ok());
+                    count = None;
                     false
-                }) = true;
+                }) = valid_value;
+            count = count.map(|c| c - 1);
+        }
+
+        if count == Some(0) {
+            return None.into_iter().chain(None);
         }
 
         let added_count = temp_owner.len();
         existing_protocols.retain(|k, v| {
-            if !*v {
+            if *v != valid_value {
                 temp_owner.push(StreamProtocol::try_from_owned(k.0.as_ref().to_owned()).unwrap());
             }
-            *v
+            *v == valid_value
         });
 
         let (added, removed) = temp_owner.split_at(added_count);