diff --git a/src/group_type.h b/src/group_type.h
--- a/src/group_type.h
+++ b/src/group_type.h
@@ -17,7 +17,7 @@ static const GroupID ALL_GROUP     = 0xF
 static const GroupID DEFAULT_GROUP = 0xFFFE; ///< Ungrouped vehicles are in this group.
 static const GroupID INVALID_GROUP = 0xFFFF; ///< Sentinel for invalid groups.
 
-static const uint MAX_LENGTH_GROUP_NAME_CHARS = 32; ///< The maximum length of a group name in characters including '\0'
+static const uint MAX_LENGTH_GROUP_NAME_CHARS = 128; ///< The maximum length of a group name in characters including '\0'
 
 struct Group;