diff --git a/lib/src/libp2p/connection/established/substream.rs b/lib/src/libp2p/connection/established/substream.rs
index 5f3cb5a3e9..27ea009e62 100644
--- a/lib/src/libp2p/connection/established/substream.rs
+++ b/lib/src/libp2p/connection/established/substream.rs
@@ -1033,10 +1033,12 @@ where
                         }
                         Ok(multistream_select::Negotiation::Success) => {}
                         Ok(multistream_select::Negotiation::NotAvailable) => {
-                            return (Some(SubstreamInner::PingOutFailed { queued_pings }), None)
+                            read_write.wake_up_asap();
+                            return (Some(SubstreamInner::PingOutFailed { queued_pings }), None);
                         }
                         Err(_) => {
-                            return (Some(SubstreamInner::PingOutFailed { queued_pings }), None)
+                            read_write.wake_up_asap();
+                            return (Some(SubstreamInner::PingOutFailed { queued_pings }), None);
                         }
                     }
                 }
@@ -1078,6 +1080,7 @@ where
                             .pop_front()
                             .map_or(true, |expected| pong != *expected)
                         {
+                            read_write.wake_up_asap();
                             return (Some(SubstreamInner::PingOutFailed { queued_pings }), None);
                         }
                         if queued_pings.remove(0).is_some() {
diff --git a/wasm-node/CHANGELOG.md b/wasm-node/CHANGELOG.md
index 0d32cc4a4d..89455e8669 100644
--- a/wasm-node/CHANGELOG.md
+++ b/wasm-node/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+### Fixed
+
+- Fix connection being properly killed when the ping substream fails to be negotiated. ([#1459](https://github.com/smol-dot/smoldot/pull/1459))
+
 ## 2.0.13 - 2023-11-28
 
 ### Changed