diff --git a/src/EloquentBuilderTrait.php b/src/EloquentBuilderTrait.php
index c54e631..0afdf8b 100644
--- a/src/EloquentBuilderTrait.php
+++ b/src/EloquentBuilderTrait.php
@@ -149,7 +149,7 @@ protected function applyFilter(Builder $queryBuilder, array $filter, $or = false
                     $clauseOperator = $not ? '!=' : '=';
                     break;
                 case 'gt':
-                    $clauseOperator = $not ? '<' : '>';
+                    $clauseOperator = $not ? '<=' : '>';
                     break;
                 case 'gte':
                     $clauseOperator = $not ? '<' : '>=';
@@ -158,7 +158,7 @@ protected function applyFilter(Builder $queryBuilder, array $filter, $or = false
                     $clauseOperator = $not ? '>' : '<=';
                     break;
                 case 'lt':
-                    $clauseOperator = $not ? '>' : '<';
+                    $clauseOperator = $not ? '>=' : '<';
                     break;
                 case 'in':
                     if ($or === true) {