diff --git a/uart_commands.c b/uart_commands.c
index 1e3645e..1bea4aa 100644
--- a/uart_commands.c
+++ b/uart_commands.c
@@ -118,9 +118,9 @@ int uart_parse_command(char *user_input, cmd_t *cmd) {
 }
 
 uint32_t uart_string_to_int(const char *str) {
-    // Convert input in port number
-	char* tmp;
-    unsigned long long int hex = strtoull(str, &tmp, 16);
+	//char* tmp;
+    //unsigned long long int hex = strtoull(str, &tmp, 16);
+	unsigned long int hex = strtoul(str, NULL, 16);
     return hex;
 }
 
@@ -130,4 +130,4 @@ void uart_send_ok(){
 
 void uart_send_err(){
 	uart_send(ERR, 6);
-}
\ No newline at end of file
+}