diff --git a/src/metrics/impl/session_impl.cpp b/src/metrics/impl/session_impl.cpp
index 6cc9484..05aa71d 100644
--- a/src/metrics/impl/session_impl.cpp
+++ b/src/metrics/impl/session_impl.cpp
@@ -69,6 +69,7 @@ namespace lean::metrics {
       }
 
       stop();
+      return;
     }
 
     handleRequest(parser_->release());
diff --git a/src/metrics/session.hpp b/src/metrics/session.hpp
index e8703c7..f612bd8 100644
--- a/src/metrics/session.hpp
+++ b/src/metrics/session.hpp
@@ -37,6 +37,9 @@ namespace lean::metrics {
       static constexpr size_t kDefaultRequestSize = 10000u;
       static constexpr Duration kDefaultTimeout = std::chrono::seconds(30);
 
+      // Fixes default field values with boost::di.
+      Configuration() = default;
+
       size_t max_request_size{kDefaultRequestSize};
       Duration operation_timeout{kDefaultTimeout};
     };