diff --git a/src/newgrf.cpp b/src/newgrf.cpp
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -2651,12 +2651,9 @@ static ChangeInfoResult LoadTranslationT
  */
 static std::string ReadDWordAsString(ByteReader *reader)
 {
-	char output[5];
-	for (int i = 0; i < 4; i++) output[i] = reader->ReadByte();
-	output[4] = '\0';
-	StrMakeValidInPlace(output, lastof(output));
-
-	return std::string(output);
+	std::string output;
+	for (int i = 0; i < 4; i++) output.push_back(reader->ReadByte());
+	return StrMakeValid(output);
 }
 
 /**
diff --git a/src/saveload/gamelog_sl.cpp b/src/saveload/gamelog_sl.cpp
--- a/src/saveload/gamelog_sl.cpp
+++ b/src/saveload/gamelog_sl.cpp
@@ -68,8 +68,7 @@ public:
 		SlObject(lc, this->GetLoadDescription());
 
 		if (IsSavegameVersionBefore(SLV_STRING_GAMELOG)) {
-			StrMakeValidInPlace(SlGamelogRevision::revision_text, lastof(SlGamelogRevision::revision_text));
-			static_cast<LoggedChangeRevision *>(lc)->text = SlGamelogRevision::revision_text;
+			static_cast<LoggedChangeRevision *>(lc)->text = StrMakeValid(std::string_view(SlGamelogRevision::revision_text, lengthof(SlGamelogRevision::revision_text)));
 		}
 	}
 
diff --git a/src/script/script_instance.cpp b/src/script/script_instance.cpp
--- a/src/script/script_instance.cpp
+++ b/src/script/script_instance.cpp
@@ -573,8 +573,7 @@ bool ScriptInstance::IsPaused()
 			SlObject(nullptr, _script_byte);
 			static char buf[std::numeric_limits<decltype(_script_sl_byte)>::max()];
 			SlCopy(buf, _script_sl_byte, SLE_CHAR);
-			StrMakeValidInPlace(buf, buf + _script_sl_byte);
-			if (data != nullptr) data->push_back(std::string(buf));
+			if (data != nullptr) data->push_back(StrMakeValid(std::string_view(buf, _script_sl_byte)));
 			return true;
 		}