diff --git a/libs/s25main/GameCommand.cpp b/libs/s25main/GameCommand.cpp
index f226d525f..468d34697 100644
--- a/libs/s25main/GameCommand.cpp
+++ b/libs/s25main/GameCommand.cpp
@@ -9,6 +9,7 @@
 
 namespace gc {
 
+/// Current version of the game commands, see VersionedDeserializer.
 unsigned Deserializer::getCurrentVersion()
 {
     return 0;