diff --git a/sdk/lib/io/network_profiling.dart b/sdk/lib/io/network_profiling.dart
index 5bacb4c8e75..6bd6910d7ba 100644
--- a/sdk/lib/io/network_profiling.dart
+++ b/sdk/lib/io/network_profiling.dart
@@ -271,7 +271,6 @@ abstract class _SocketProfile {
     // Skip any socket that started before `_enableSocketProfiling` was turned
     // on.
     final stats = _idToSocketStatistic[idKey];
-    assert(stats != null, '"$idKey" not found in "_idToSocketStatistic" map');
     if (stats == null) return;
     switch (type) {
       case _SocketProfileType.endTime: