diff --git a/twrp-functions.cpp b/twrp-functions.cpp
index d7c9c2c..5df44c6 100644
--- a/twrp-functions.cpp
+++ b/twrp-functions.cpp
@@ -97,7 +97,7 @@
 }
 
 // Returns "file.name" from a full /path/to/file.name
-string TWFunc::Get_Filename(string Path) {
+string TWFunc::Get_Filename(const string& Path) {
 	size_t pos = Path.find_last_of("/");
 	if (pos != string::npos) {
 		string Filename;
@@ -108,7 +108,7 @@
 }
 
 // Returns "/path/to/" from a full /path/to/file.name
-string TWFunc::Get_Path(string Path) {
+string TWFunc::Get_Path(const string& Path) {
 	size_t pos = Path.find_last_of("/");
 	if (pos != string::npos) {
 		string Pathonly;
@@ -390,7 +390,7 @@
 #ifndef BUILD_TWRPTAR_MAIN
 
 // Returns "/path" from a full /path/to/file.name
-string TWFunc::Get_Root_Path(string Path) {
+string TWFunc::Get_Root_Path(const string& Path) {
 	string Local_Path = Path;
 
 	// Make sure that we have a leading slash
@@ -567,7 +567,7 @@
 
 void TWFunc::Update_Intent_File(string Intent) {
 	if (PartitionManager.Mount_By_Path("/cache", false) && !Intent.empty()) {
-		TWFunc::write_file("/cache/recovery/intent", Intent);
+		TWFunc::write_to_file("/cache/recovery/intent", Intent);
 	}
 }
 
@@ -759,7 +759,7 @@
 	return -1;
 }
 
-int TWFunc::write_file(string fn, string& line) {
+int TWFunc::write_to_file(const string& fn, const string& line) {
 	FILE *file;
 	file = fopen(fn.c_str(), "w");
 	if (file != NULL) {
@@ -1042,11 +1042,11 @@
 
 	if (DataManager::GetIntValue("tw_has_brightnesss_file")) {
 		LOGINFO("TWFunc::Set_Brightness: Setting brightness control to %s\n", brightness_value.c_str());
-		result = TWFunc::write_file(DataManager::GetStrValue("tw_brightness_file"), brightness_value);
+		result = TWFunc::write_to_file(DataManager::GetStrValue("tw_brightness_file"), brightness_value);
 		DataManager::GetValue("tw_secondary_brightness_file", secondary_brightness_file);
 		if (!secondary_brightness_file.empty()) {
 			LOGINFO("TWFunc::Set_Brightness: Setting secondary brightness control to %s\n", brightness_value.c_str());
-			TWFunc::write_file(secondary_brightness_file, brightness_value);
+			TWFunc::write_to_file(secondary_brightness_file, brightness_value);
 		}
 	}
 	return result;
@@ -1123,7 +1123,7 @@
 
 	std::string result;
 	Exec_Cmd(dmesgCmd, result);
-	write_file(dmesgDst, result);
+	write_to_file(dmesgDst, result);
 	gui_msg(Msg("copy_kernel_log=Copied kernel log to {1}")(dmesgDst));
 	tw_set_default_metadata(dmesgDst.c_str());
 }