diff --git a/src/WebApiContrib.Core.Formatter.Bson/BsonInputFormatter.cs b/src/WebApiContrib.Core.Formatter.Bson/BsonInputFormatter.cs
index 065fa40..efbc6bb 100644
--- a/src/WebApiContrib.Core.Formatter.Bson/BsonInputFormatter.cs
+++ b/src/WebApiContrib.Core.Formatter.Bson/BsonInputFormatter.cs
@@ -57,6 +57,7 @@ public override Task<InputFormatterResult> ReadRequestBodyAsync(InputFormatterCo
                 }
                 finally
                 {
+                    jsonSerializer.Error -= errorHandler;
                     _jsonSerializerPool.Return(jsonSerializer);
                 }