diff --git a/src/strings.cpp b/src/strings.cpp
index f4ac15de96..207cd883ff 100644
--- a/src/strings.cpp
+++ b/src/strings.cpp
@@ -191,7 +191,7 @@ void CopyOutDParam(std::vector<StringParameterBackup> &backup, size_t num)
  * @param backup The backup to check against.
  * @return True when the parameters have changed, otherwise false.
  */
-bool HaveDParamChanged(const std::vector<StringParameterBackup> &backup)
+bool HaveDParamChanged(const std::span<const StringParameterBackup> backup)
 {
 	bool changed = false;
 	for (size_t i = 0; !changed && i < backup.size(); i++) {
diff --git a/src/strings_func.h b/src/strings_func.h
index 21a77705d8..60da2a7b55 100644
--- a/src/strings_func.h
+++ b/src/strings_func.h
@@ -100,7 +100,7 @@ void SetDParamStr(size_t n, std::string &&str);
 
 void CopyInDParam(const std::span<const StringParameterBackup> backup);
 void CopyOutDParam(std::vector<StringParameterBackup> &backup, size_t num);
-bool HaveDParamChanged(const std::vector<StringParameterBackup> &backup);
+bool HaveDParamChanged(const std::span<const StringParameterBackup> backup);
 
 uint64_t GetDParam(size_t n);