diff --git a/api.php b/api.php
index 94d4f67..67ed9d6 100755
--- a/api.php
+++ b/api.php
@@ -107,6 +107,8 @@ elseif($q=="currentBlock"){
     $dst=san($data['dst']);
 
     if(!$acc->valid($dst)) api_err("Invalid destination address");
+    $dst_b=base58_decode($dst);
+    if(strlen($dst_b)!=64)  api_err("Invalid destination address");
 
 
     $public_key=san($data['public_key']);
@@ -199,4 +201,4 @@ elseif($q=="currentBlock"){
 } else {
      api_err("Invalid request");
  }
-?>
\ No newline at end of file
+?>