diff --git a/src/Php70/Php70.php b/src/Php70/Php70.php
index 8e78450..55cd94f 100644
--- a/src/Php70/Php70.php
+++ b/src/Php70/Php70.php
@@ -60,7 +60,7 @@ public static function error_clear_last()
         restore_error_handler();
     }
 
-    public static function intArg($value, $caller, $pos)
+    private static function intArg($value, $caller, $pos)
     {
         if (is_int($value)) {
             return $value;