diff --git a/app/Services/Master/RawMaterialService.php b/app/Services/Master/RawMaterialService.php
index 2173b37..eff3251 100644
--- a/app/Services/Master/RawMaterialService.php
+++ b/app/Services/Master/RawMaterialService.php
@@ -53,17 +53,17 @@ public function paginateForIndex(array $tableQuery, string $isActive, string $st
             })
             ->when($stockStatus === 'low_stock', function (Builder $query): void {
                 $minStock = [
-                    RawMaterialUnit::YARD => 20,
-                    RawMaterialUnit::METER => 10,
-                    RawMaterialUnit::KILOGRAM => 5,
+                    RawMaterialUnit::YARD->value => 20,
+                    RawMaterialUnit::METER->value => 10,
+                    RawMaterialUnit::KILOGRAM->value => 5,
                 ];
 
                 $query->whereHas('prices', function (Builder $priceQuery) use ($minStock): void {
                     $priceQuery->where('stock', '>', 0)->where(function (Builder $priceQuery) use ($minStock): void {
                         foreach (RawMaterialUnit::cases() as $unit) {
                             $priceQuery->orWhere(function (Builder $priceQuery) use ($unit, $minStock): void {
-                                $priceQuery->whereHas('rawMaterial', fn (Builder $rawMaterialQuery) => $rawMaterialQuery->where('unit', $unit))
-                                    ->where('stock', '<', $minStock[$unit]);
+                                $priceQuery->whereHas('rawMaterial', fn (Builder $rawMaterialQuery) => $rawMaterialQuery->where('unit', $unit->value))
+                                    ->where('stock', '<', $minStock[$unit->value]);
                             });
                         }
                     });
diff --git a/tests/Feature/Admin/Master/RawMaterialTest.php b/tests/Feature/Admin/Master/RawMaterialTest.php
index 479f63f..0768ea9 100644
--- a/tests/Feature/Admin/Master/RawMaterialTest.php
+++ b/tests/Feature/Admin/Master/RawMaterialTest.php
@@ -141,6 +141,44 @@ function createRawMaterialVerifierUser(): User
             ->get(route('admin.master.raw_materials.index', ['is_active' => '1']))
             ->assertOk();
     });
+
+    test('index can filter by stock status (out of stock)', function () {
+        $user = createRawMaterialUserWithPermission(PermissionEnum::RAW_MATERIALS_VIEW);
+
+        $inStock = RawMaterial::factory()->create();
+        RawMaterialPrice::factory()->create(['raw_material_id' => $inStock->id, 'stock' => 10]);
+
+        $outOfStock = RawMaterial::factory()->create();
+        RawMaterialPrice::factory()->create(['raw_material_id' => $outOfStock->id, 'stock' => 0]);
+
+        $response = $this->actingAs($user)
+            ->get(route('admin.master.raw_materials.index', ['stock_status' => 'out_of_stock']));
+
+        $response->assertOk();
+        $response->assertInertia(fn ($page) => $page
+            ->has('rawMaterials.data', 1)
+            ->where('rawMaterials.data.0.id', $outOfStock->id)
+        );
+    });
+
+    test('index can filter by stock status (low stock)', function () {
+        $user = createRawMaterialUserWithPermission(PermissionEnum::RAW_MATERIALS_VIEW);
+
+        $yardNormal = RawMaterial::factory()->create(['unit' => RawMaterialUnit::YARD->value]);
+        RawMaterialPrice::factory()->create(['raw_material_id' => $yardNormal->id, 'stock' => 25]);
+
+        $yardLow = RawMaterial::factory()->create(['unit' => RawMaterialUnit::YARD->value]);
+        RawMaterialPrice::factory()->create(['raw_material_id' => $yardLow->id, 'stock' => 15]);
+
+        $response = $this->actingAs($user)
+            ->get(route('admin.master.raw_materials.index', ['stock_status' => 'low_stock']));
+
+        $response->assertOk();
+        $response->assertInertia(fn ($page) => $page
+            ->has('rawMaterials.data', 1)
+            ->where('rawMaterials.data.0.id', $yardLow->id)
+        );
+    });
 });
 
 // ─── Create ───────────────────────────────────────────────