diff --git a/app/Http/Requests/Document/Document.php b/app/Http/Requests/Document/Document.php
index d67ba226a..89a0cdc99 100644
--- a/app/Http/Requests/Document/Document.php
+++ b/app/Http/Requests/Document/Document.php
@@ -75,7 +75,7 @@ class Document extends FormRequest
                     $size = 7;
                 }
 
-                $rules['items.' . $key . '.quantity'] = 'required|max:' . $size;
+                $rules['items.' . $key . '.quantity'] = 'required|max:' . $size . '|numeric|gt:0';
                 $this->items_quantity_size[$key] = $size;
             }
         }
@@ -108,6 +108,7 @@ class Document extends FormRequest
         if ($this->items_quantity_size) {
             foreach ($this->items_quantity_size as $key => $quantity_size) {
                 $messages['items.' . $key . '.quantity.max'] = trans('validation.size', ['attribute' => Str::lower(trans('invoices.quantity')), 'size' => $quantity_size]);
+                $messages['items.' . $key . '.quantity.gt'] = trans('validation.gt.numeric', ['attribute' => Str::lower(trans('invoices.quantity')), 'value' => 0]);
             }
         }
 
diff --git a/tests/Feature/Purchases/BillsTest.php b/tests/Feature/Purchases/BillsTest.php
index 279c58320..68104ecac 100644
--- a/tests/Feature/Purchases/BillsTest.php
+++ b/tests/Feature/Purchases/BillsTest.php
@@ -112,6 +112,24 @@ class BillsTest extends FeatureTestCase
         ]);
     }
 
+    public function testItShouldNotCreateBillWithNegativeQuantity()
+    {
+        $request = $this->getRequest();
+
+        $request['items'][0]['quantity'] = '-1';
+
+        $this->handleValidationExceptions();
+
+        $this->loginAs()
+            ->post(route('bills.store'), $request)
+            ->assertRedirect()
+            ->assertInvalid(['items.0.quantity']);
+
+        $this->assertDatabaseMissing('documents', [
+            'document_number' => $request['document_number'],
+        ]);
+    }
+
     public function testItShouldSeeBillUpdatePage()
     {
         $request = $this->getRequest();
diff --git a/tests/Feature/Sales/InvoicesTest.php b/tests/Feature/Sales/InvoicesTest.php
index c5a1a439d..e645e483c 100644
--- a/tests/Feature/Sales/InvoicesTest.php
+++ b/tests/Feature/Sales/InvoicesTest.php
@@ -123,6 +123,24 @@ class InvoicesTest extends FeatureTestCase
         ]);
     }
 
+    public function testItShouldNotCreateInvoiceWithNegativeQuantity()
+    {
+        $request = $this->getRequest();
+
+        $request['items'][0]['quantity'] = '-1';
+
+        $this->handleValidationExceptions();
+
+        $this->loginAs()
+            ->post(route('invoices.store'), $request)
+            ->assertRedirect()
+            ->assertInvalid(['items.0.quantity']);
+
+        $this->assertDatabaseMissing('documents', [
+            'document_number' => $request['document_number'],
+        ]);
+    }
+
     public function testItShouldSeeInvoiceUpdatePage()
     {
         $request = $this->getRequest();