diff --git a/src/nhttpd/yhttpd_core/helper.cpp b/src/nhttpd/yhttpd_core/helper.cpp
index 8bd342654..d1d1d3f45 100644
--- a/src/nhttpd/yhttpd_core/helper.cpp
+++ b/src/nhttpd/yhttpd_core/helper.cpp
@@ -250,9 +250,9 @@ std::string string_tolower(std::string str) {
 //-----------------------------------------------------------------------------
 // write string to a file
 //-----------------------------------------------------------------------------
-bool write_to_file(std::string filename, std::string content) {
+bool write_to_file(std::string filename, std::string content, bool append) {
 	FILE *fd = NULL;
-	if ((fd = fopen(filename.c_str(), "w")) != NULL) // open file
+	if ((fd = fopen(filename.c_str(), append ? "a" : "w")) != NULL) // open file
 	{
 		fwrite(content.c_str(), content.length(), 1, fd);
 		fflush(fd); // flush and close file
diff --git a/src/nhttpd/yhttpd_core/helper.h b/src/nhttpd/yhttpd_core/helper.h
index fd04c3247..20e6a0a13 100644
--- a/src/nhttpd/yhttpd_core/helper.h
+++ b/src/nhttpd/yhttpd_core/helper.h
@@ -35,7 +35,7 @@ bool ySplitStringLast(std::string str, std::string delimiter, std::string& left,
 CStringArray ySplitStringVector(std::string str, std::string delimiter);
 bool nocase_compare (char c1, char c2);
 std::string timeString(time_t time);
-bool write_to_file(std::string filename, std::string content);
+bool write_to_file(std::string filename, std::string content, bool append=false);
 
 //-----------------------------------------------------------------------------
 // JSON Helpers