diff --git a/Mage.Server/src/main/java/mage/server/SessionManager.java b/Mage.Server/src/main/java/mage/server/SessionManager.java
index e33d6994f97..2bf3e9e4fc7 100644
--- a/Mage.Server/src/main/java/mage/server/SessionManager.java
+++ b/Mage.Server/src/main/java/mage/server/SessionManager.java
@@ -119,6 +119,7 @@ public class SessionManager {
                     // session was removed meanwhile by another thread so we can return
                     return;
                 }
+                logger.debug("DISCONNECT  " + reason.toString() + " - sessionId: "+ sessionId);
                 sessions.remove(sessionId);
                 switch (reason) {
                     case Disconnected: