diff --git a/client_http.hpp b/client_http.hpp
index fd2471f..5d1a1d0 100644
--- a/client_http.hpp
+++ b/client_http.hpp
@@ -100,11 +100,13 @@ namespace SimpleWeb {
           return;
         }
         timer = std::unique_ptr<asio::steady_timer>(new asio::steady_timer(get_socket_executor(*socket), std::chrono::seconds(seconds)));
-        auto self = this->shared_from_this();
-        timer->async_wait([self](const error_code &ec) {
+        std::weak_ptr<Connection> self_weak(this->shared_from_this()); // To avoid keeping Connection instance alive longer than needed
+        timer->async_wait([self_weak](const error_code &ec) {
           if(!ec) {
-            error_code ec;
-            self->socket->lowest_layer().cancel(ec);
+            if(auto self = self_weak.lock()) {
+              error_code ec;
+              self->socket->lowest_layer().cancel(ec);
+            }
           }
         });
       }
diff --git a/server_http.hpp b/server_http.hpp
index d86e5c7..290d3f4 100644
--- a/server_http.hpp
+++ b/server_http.hpp
@@ -277,10 +277,12 @@ namespace SimpleWeb {
         }
 
         timer = std::unique_ptr<asio::steady_timer>(new asio::steady_timer(get_socket_executor(*socket), std::chrono::seconds(seconds)));
-        auto self = this->shared_from_this();
-        timer->async_wait([self](const error_code &ec) {
-          if(!ec)
-            self->close();
+        std::weak_ptr<Connection> self_weak(this->shared_from_this()); // To avoid keeping Connection instance alive longer than needed
+        timer->async_wait([self_weak](const error_code &ec) {
+          if(!ec) {
+            if(auto self = self_weak.lock())
+              self->close();
+          }
         });
       }