diff --git a/src/strings.cpp b/src/strings.cpp
--- a/src/strings.cpp
+++ b/src/strings.cpp
@@ -155,7 +155,7 @@ void SetDParamMaxDigits(size_t n, uint c
  * Copy the parameters from the backup into the global string parameter array.
  * @param backup The backup to copy from.
  */
-void CopyInDParam(const span<const StringParameterBackup> backup)
+void CopyInDParam(const std::span<const StringParameterBackup> backup)
 {
 	for (size_t i = 0; i < backup.size(); i++) {
 		auto &value = backup[i];