diff --git a/src/depot_cmd.cpp b/src/depot_cmd.cpp
--- a/src/depot_cmd.cpp
+++ b/src/depot_cmd.cpp
@@ -44,7 +44,7 @@ static bool IsUniqueDepotName(const std:
  * @param text the new name or an empty string when resetting to the default
  * @return the cost of this operation or an error
  */
-CommandCost CmdRenameDepot(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
+CommandCost CmdRenameDepot(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const std::string &text)
 {
 	Depot *d = Depot::GetIfValid(p1);
 	if (d == nullptr) return CMD_ERROR;
@@ -52,7 +52,7 @@ CommandCost CmdRenameDepot(TileIndex til
 	CommandCost ret = CheckTileOwnership(d->xy);
 	if (ret.Failed()) return ret;
 
-	bool reset = StrEmpty(text);
+	bool reset = text.empty();
 
 	if (!reset) {
 		if (Utf8StringLength(text) >= MAX_LENGTH_DEPOT_NAME_CHARS) return CMD_ERROR;