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-rw-r--r--src/signs.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/signs.cpp b/src/signs.cpp
index f8ad95f45..0004a65d8 100644
--- a/src/signs.cpp
+++ b/src/signs.cpp
@@ -13,6 +13,7 @@
#include "saveload.h"
#include "command.h"
#include "variables.h"
+#include "string.h"
#include "misc/autoptr.hpp"
SignID _new_sign_id;
@@ -128,7 +129,7 @@ CommandCost CmdRenameSign(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
/* If _cmd_text 0 means the new text for the sign is non-empty.
* So rename the sign. If it is empty, it has no name, so delete it */
- if (_cmd_text[0] != '\0') {
+ if (!StrEmpty(_cmd_text)) {
/* Create the name */
StringID str = AllocateName(_cmd_text, 0);
if (str == 0) return CMD_ERROR;