diff --git a/src/script/script_config.cpp b/src/script/script_config.cpp
index 738a898a79..7f4cfebb6d 100644
--- a/src/script/script_config.cpp
+++ b/src/script/script_config.cpp
@@ -216,7 +216,7 @@ std::string ScriptConfig::SettingsToString() const
 	char *s = string;
 	*s = '\0';
 	for (const auto &item : this->settings) {
-		char no[10];
+		char no[INT32_DIGITS_WITH_SIGN_AND_TERMINATION];
 		seprintf(no, lastof(no), "%d", item.second);
 
 		/* Check if the string would fit in the destination */