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-rw-r--r--src/group_cmd.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/group_cmd.cpp b/src/group_cmd.cpp
index 331feda34..44bfd12c1 100644
--- a/src/group_cmd.cpp
+++ b/src/group_cmd.cpp
@@ -170,7 +170,8 @@ static bool IsUniqueGroupName(const char *name)
*/
CommandCost CmdRenameGroup(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
- if (!IsValidGroupID(p1) || StrEmpty(_cmd_text)) return CMD_ERROR;
+ if (!IsValidGroupID(p1)) return CMD_ERROR;
+ if (StrEmpty(_cmd_text) || strlen(_cmd_text) >= MAX_LENGTH_GROUP_NAME_BYTES) return CMD_ERROR;
Group *g = GetGroup(p1);
if (g->owner != _current_player) return CMD_ERROR;