diff --git a/src/system/proc_tools.cpp b/src/system/proc_tools.cpp
index 5d863b80b..a4c06296e 100644
--- a/src/system/proc_tools.cpp
+++ b/src/system/proc_tools.cpp
@@ -10,8 +10,9 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <unistd.h>
-#include <ctype.h>	/* isspace */
-#include <stdio.h>	/* sscanf */
+#include <cctype>	/* isspace */
+#include <cstdio>	/* sscanf */
+#include <cstring>
 
 #include "proc_tools.h"
 
@@ -28,6 +29,11 @@ int proc_put(const char *path, const char *value, const int len)
 	return ret;
 }
 
+int proc_put(const char *path, const char *value)
+{
+	return proc_put(path, value, strlen(value));
+}
+
 int proc_put(const char *path, bool state)
 {
 	return proc_put(path, state ? "1" : "0", 1);
diff --git a/src/system/proc_tools.h b/src/system/proc_tools.h
index 720fe1790..187516423 100644
--- a/src/system/proc_tools.h
+++ b/src/system/proc_tools.h
@@ -9,6 +9,7 @@
 #ifndef __PROC_TOOLS_H__
 #define __PROC_TOOLS_H__
 int proc_put(const char *path, const char *value, const int len);
+int proc_put(const char *path, const char *value);
 int proc_put(const char *path, bool state);
 int proc_get(const char *path, char *value, const int len);
 unsigned int proc_get_hex(const char *path);