diff --git a/app/Http/Controllers/RecipeController.php b/app/Http/Controllers/RecipeController.php
index a0dde29..a95f058 100644
--- a/app/Http/Controllers/RecipeController.php
+++ b/app/Http/Controllers/RecipeController.php
@@ -201,11 +201,14 @@ class RecipeController extends Controller
             'description_delta' => $input['description_delta'],
             'servings' => (int) $input['servings'],
             'weight' => $input['weight'],
-            'volume' => Number::floatFromString($input['volume']),
+            'volume' => $input['volume'],
             'time_prep' => (int) $input['time_prep'],
             'time_cook' => (int) $input['time_cook'],
             'source' => $input['source'],
         ]);
+        if (!empty($input['volume'])) {
+            $recipe->volume = Number::floatFromString($input['volume']);
+        }
 
         try {
             DB::transaction(function () use ($input, $recipe, $request) {