diff --git a/InvenTree/build/models.py b/InvenTree/build/models.py
index 49a1bcf5dc..836536476b 100644
--- a/InvenTree/build/models.py
+++ b/InvenTree/build/models.py
@@ -745,7 +745,7 @@ class Build(MPTTModel):
             raise ValidationError(_("Build output does not match Build Order"))
 
         # Unallocate all build items against the output
-        self.unallocateStock(output)
+        self.unallocateOutput(output)
 
         # Remove the build output from the database
         output.delete()
diff --git a/InvenTree/build/views.py b/InvenTree/build/views.py
index 4b5a60e6e7..7e27c1bc64 100644
--- a/InvenTree/build/views.py
+++ b/InvenTree/build/views.py
@@ -212,7 +212,7 @@ class BuildOutputCreate(AjaxUpdateView):
 
         # Calculate the required quantity
         quantity = max(0, build.remaining - build.incomplete_count)
-        initials['quantity'] = quantity
+        initials['output_quantity'] = quantity
 
         return initials