diff --git a/src/EloquentJoinBuilder.php b/src/EloquentJoinBuilder.php
index 53b0d3c..6d88feb 100644
--- a/src/EloquentJoinBuilder.php
+++ b/src/EloquentJoinBuilder.php
@@ -134,8 +134,8 @@ private function performJoin($relations, $leftJoin = null)
             /** @var Relation $relatedRelation */
             $relatedRelation   = $currentModel->$relation();
             $relatedModel      = $relatedRelation->getRelated();
-            $relatedTable      = $relatedModel->getTable();
             $relatedPrimaryKey = $relatedModel->getKeyName();
+            $relatedTable      = $relatedModel->getTable();
             $relatedTableAlias = $this->useTableAlias ? uniqid() : $relatedTable;
 
             $relationsAccumulated[]    = $relatedTableAlias;
@@ -143,17 +143,17 @@ private function performJoin($relations, $leftJoin = null)
 
             //relations count
             if ($this->appendRelationsCount) {
-                $this->selectRaw('COUNT('.$relatedTable.'.'.$relatedPrimaryKey.') as '.$relationAccumulatedString.'_count');
+                $this->selectRaw('COUNT('.$relatedTableAlias.'.'.$relatedPrimaryKey.') as '.$relationAccumulatedString.'_count');
             }
 
             if (!in_array($relationAccumulatedString, $this->joinedTables)) {
-                $joinQuery = $relatedTable.($this->useTableAlias ? ' as '.$relatedTableAlias : '');
+                $joinQuery = $relatedTableAlias.($this->useTableAlias ? ' as '.$relatedTableAlias : '');
                 if ($relatedRelation instanceof BelongsToJoin) {
-                    $relatedKey = $relatedRelation->getForeignKey();
-                    $ownerKey = $relatedRelation->getOwnerKey();
+                    $relatedKey = $relatedRelation->getQualifiedForeignKey();
+                    $relatedKey = last(explode('.', $relatedKey));
 
-                    $this->$joinMethod($joinQuery, function ($join) use ($relatedRelation, $relatedTableAlias, $ownerKey, $currentTableAlias, $relatedKey) {
-                        $join->on($relatedTableAlias.'.'.$ownerKey, '=', $currentTableAlias.'.'.$relatedKey);
+                    $this->$joinMethod($joinQuery, function ($join) use ($relatedRelation, $relatedTableAlias, $relatedKey, $currentTableAlias, $relatedPrimaryKey) {
+                        $join->on($relatedTableAlias.'.'.$relatedPrimaryKey, '=', $currentTableAlias.'.'.$relatedKey);
 
                         $this->joinQuery($join, $relatedRelation, $relatedTableAlias);
                     });
@@ -161,11 +161,8 @@ private function performJoin($relations, $leftJoin = null)
                     $relatedKey = $relatedRelation->getQualifiedForeignKeyName();
                     $relatedKey = last(explode('.', $relatedKey));
 
-                    $localKey = $relatedRelation->getQualifiedParentKeyName();
-                    $localKey = last(explode('.', $localKey));
-
-                    $this->$joinMethod($joinQuery, function ($join) use ($relatedRelation, $relatedTableAlias, $relatedKey, $currentTableAlias, $localKey) {
-                        $join->on($relatedTableAlias.'.'.$relatedKey, '=', $currentTableAlias.'.'.$localKey);
+                    $this->$joinMethod($joinQuery, function ($join) use ($relatedRelation, $relatedTableAlias, $relatedKey, $currentTableAlias, $currentPrimaryKey) {
+                        $join->on($relatedTableAlias.'.'.$relatedKey, '=', $currentTableAlias.'.'.$currentPrimaryKey);
 
                         $this->joinQuery($join, $relatedRelation, $relatedTableAlias);
                     });
diff --git a/tests/Models/Key/Location.php b/tests/Models/Key/Location.php
new file mode 100644
index 0000000..9b6094c
--- /dev/null
+++ b/tests/Models/Key/Location.php
@@ -0,0 +1,14 @@
+<?php
+
+namespace Fico7489\Laravel\EloquentJoin\Tests\Models\Key;
+
+use Fico7489\Laravel\EloquentJoin\Tests\Models\BaseModel;
+
+class Location extends BaseModel
+{
+    protected $primaryKey = 'key_id_location';
+
+    protected $table = 'key_locations';
+
+    protected $fillable = ['address', 'seller_id'];
+}
diff --git a/tests/Models/Key/Order.php b/tests/Models/Key/Order.php
new file mode 100644
index 0000000..28fdf14
--- /dev/null
+++ b/tests/Models/Key/Order.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace Fico7489\Laravel\EloquentJoin\Tests\Models\Key;
+
+use Fico7489\Laravel\EloquentJoin\Tests\Models\BaseModel;
+
+class Order extends BaseModel
+{
+    protected $primaryKey = 'key_id_order';
+
+    protected $table = 'key_orders';
+
+    protected $fillable = ['number', 'seller_id'];
+
+    public function seller()
+    {
+        return $this->belongsTo(Seller::class, 'key_seller_id', 'key_id_order');
+    }
+}
diff --git a/tests/Models/Key/Seller.php b/tests/Models/Key/Seller.php
new file mode 100644
index 0000000..24db010
--- /dev/null
+++ b/tests/Models/Key/Seller.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace Fico7489\Laravel\EloquentJoin\Tests\Models\Key;
+
+use Fico7489\Laravel\EloquentJoin\Tests\Models\BaseModel;
+
+class Seller extends BaseModel
+{
+    protected $primaryKey = 'key_id_seller';
+
+    protected $table = 'key_sellers';
+
+    protected $fillable = ['title', 'deleted_at'];
+
+    public function location()
+    {
+        return $this->hasOne(Location::class, 'key_seller_id', 'key_id_seller');
+    }
+
+    public function locations()
+    {
+        return $this->hasMany(Location::class, 'key_seller_id', 'key_id_seller');
+    }
+}
diff --git a/tests/Tests/KeysTest.php b/tests/Tests/KeysTest.php
new file mode 100644
index 0000000..7cdaa92
--- /dev/null
+++ b/tests/Tests/KeysTest.php
@@ -0,0 +1,49 @@
+<?php
+
+namespace Fico7489\Laravel\EloquentJoin\Tests\Tests;
+
+use Fico7489\Laravel\EloquentJoin\Tests\Models\Key\Order;
+use Fico7489\Laravel\EloquentJoin\Tests\Models\Key\Seller;
+use Fico7489\Laravel\EloquentJoin\Tests\TestCase;
+
+class KeysTest extends TestCase
+{
+    public function testBelogsTo()
+    {
+        Order::joinRelations('seller')
+            ->get();
+
+        $queryTest = 'select key_orders.* 
+            from "key_orders" 
+            left join "key_sellers" on "key_sellers"."key_id_seller" = "key_orders"."key_seller_id" 
+            group by "key_orders"."key_id_order"';
+
+        $this->assertQueryMatches($queryTest, $this->fetchQuery());
+    }
+
+    public function testHasOne()
+    {
+        Seller::joinRelations('location')
+            ->get();
+
+        $queryTest = 'select key_sellers.* 
+            from "key_sellers" 
+            left join "key_locations" on "key_locations"."key_seller_id" = "key_sellers"."key_id_seller" 
+            group by "key_sellers"."key_id_seller"';
+
+        $this->assertQueryMatches($queryTest, $this->fetchQuery());
+    }
+
+    public function testHasMany()
+    {
+        Seller::joinRelations('locations')
+            ->get();
+
+        $queryTest = 'select key_sellers.* 
+            from "key_sellers" 
+            left join "key_locations" on "key_locations"."key_seller_id" = "key_sellers"."key_id_seller" 
+            group by "key_sellers"."key_id_seller"';
+
+        $this->assertQueryMatches($queryTest, $this->fetchQuery());
+    }
+}
diff --git a/tests/database/migrations/2017_11_04_163552_create_database.php b/tests/database/migrations/2017_11_04_163552_create_database.php
index d7a4813..696abce 100644
--- a/tests/database/migrations/2017_11_04_163552_create_database.php
+++ b/tests/database/migrations/2017_11_04_163552_create_database.php
@@ -125,6 +125,30 @@ public function up()
             $table->timestamps();
             $table->softDeletes();
         });
+
+        //for key tests
+        Schema::create('key_orders', function (Blueprint $table) {
+            $table->increments('key_id_order');
+            $table->string('number')->nullable();
+            $table->unsignedInteger('key_seller_id')->nullable();
+
+            $table->foreign('key_seller_id')->references('id')->on('sellers');
+        });
+
+        Schema::create('key_sellers', function (Blueprint $table) {
+            $table->increments('key_id_seller');
+            $table->string('title')->nullable();
+            $table->unsignedInteger('city_id')->nullable();
+        });
+
+        Schema::create('key_locations', function (Blueprint $table) {
+            $table->increments('id');
+            $table->string('address')->nullable();
+            $table->boolean('is_primary')->default(0);
+            $table->unsignedInteger('key_seller_id')->nullable();
+
+            $table->foreign('key_seller_id')->references('id')->on('sellers');
+        });
     }
 
     /**
@@ -141,5 +165,11 @@ public function down()
         Schema::drop('states');
         Schema::drop('location_addresses');
         Schema::drop('integrations');
+        Schema::drop('orders');
+
+        //for key tests
+        Schema::drop('key_orders');
+        Schema::drop('key_sellers');
+        Schema::drop('key_locations');
     }
 }