diff --git a/src/Expressions/BinaryOperatorExpression.php b/src/Expressions/BinaryOperatorExpression.php
index 0189d64..7991433 100644
--- a/src/Expressions/BinaryOperatorExpression.php
+++ b/src/Expressions/BinaryOperatorExpression.php
@@ -202,7 +202,8 @@ public function evaluate(row $row, AsyncMysqlConnection $conn): mixed {
             return (int)$left_number << (int)$right_number;
           case '>>':
             return (int)$left_number >> (int)$right_number;
-
+          default:
+            throw new SQLFakeRuntimeException("Operator recognized but not implemented");
         }
       case 'LIKE':
         $left_string = (string)$left->evaluate($row, $conn);