diff --git a/src/Database/Builder.php b/src/Database/Builder.php
index 3c4af0d1..9b64c0b2 100644
--- a/src/Database/Builder.php
+++ b/src/Database/Builder.php
@@ -88,6 +88,9 @@ protected function searchWhereInternal($term, $columns, $mode, $boolean)
                     if (!strlen($term)) {
                         continue;
                     }
+                    if ($field instanceof Expression) {
+                        $field = $field->getValue($query->getQuery()->getGrammar());
+                    }
                     $fieldSql = $this->query->raw(sprintf("lower(%s)", DbDongle::cast($field, 'text')));
                     $termSql = '%' . trim(mb_strtolower($term)) . '%';
                     $query->orWhere($fieldSql, 'LIKE', $termSql);
diff --git a/tests/Database/ModelTest.php b/tests/Database/ModelTest.php
index 94ed4064..625c5a68 100644
--- a/tests/Database/ModelTest.php
+++ b/tests/Database/ModelTest.php
@@ -133,6 +133,33 @@ protected function seedTables()
         $this->seeded['websites'][1]->users()->add($this->seeded['users'][1]);
     }
 
+    public function testSearchWhereExactHandlesExpressionColumns()
+    {
+        $grammar = Post::query()->getQuery()->getGrammar();
+        $relationColumn = DB::raw(sprintf(
+            '(select %s from %s where %s = %s)',
+            $grammar->wrap('users.name'),
+            $grammar->wrapTable('users'),
+            $grammar->wrap('users.id'),
+            $grammar->wrap('posts.user_id')
+        ));
+
+        $resultIds = Post::query()
+            ->searchWhere('User1', [$relationColumn], 'exact')
+            ->pluck('id')
+            ->all();
+
+        sort($resultIds);
+
+        $expectedIds = [
+            $this->seeded['posts'][0]->id,
+            $this->seeded['posts'][1]->id,
+        ];
+        sort($expectedIds);
+
+        $this->assertEquals($expectedIds, $resultIds);
+    }
+
     // tests hasOneThrough & hasManyThrough
     public function testDeleteWithThroughRelations()
     {