diff --git a/src/script/script.h b/src/script/script.h
index 76bc844af..4d816f891 100644
--- a/src/script/script.h
+++ b/src/script/script.h
@@ -637,7 +637,7 @@ public:
 
     bool IsUnspendable() const
     {
-           return (size() > 0 && *begin() == OP_RETURN);
+        return (size() > 0 && *begin() == OP_RETURN) || (size() > MAX_SCRIPT_SIZE);
     }
 
     void clear()