diff --git a/changelog/70_UNRELEASED_xxxx.xx.xx.md b/changelog/70_UNRELEASED_xxxx.xx.xx.md
index f1fe2b5c..ccb4d372 100644
--- a/changelog/70_UNRELEASED_xxxx.xx.xx.md
+++ b/changelog/70_UNRELEASED_xxxx.xx.xx.md
@@ -52,6 +52,7 @@
 
 - Added a new sub feature flag `FEATURE_FLAG_RECIPES_MEALPLAN` (in `config.php`) to only disable the meal plan if not needed (thanks @webysther)
 - Fixed that consuming a recipe from the meal plan didn't add its "Produces product"-product to stock (if any)
+- Fixed that the "Put missing products on shopping list"-button in the header (to put all missing products on the shopping list for a whole week) was missing under certain circumstances (related to locale week numbers and turn of the year)
 
 ### Chores
 
diff --git a/controllers/RecipesController.php b/controllers/RecipesController.php
index fdf9edfc..da65ddeb 100644
--- a/controllers/RecipesController.php
+++ b/controllers/RecipesController.php
@@ -23,7 +23,7 @@ class RecipesController extends BaseController
 			$days = $request->getQueryParams()['days'];
 		}
 
-		$mealPlanWhereTimespan = "day BETWEEN DATE('$start') AND DATE('$start', '+$days days')";
+		$mealPlanWhereTimespan = "day BETWEEN DATE('$start', '-$days days') AND DATE('$start', '+$days days')";
 
 		$recipes = $this->getDatabase()->recipes()->where('type', RecipesService::RECIPE_TYPE_NORMAL)->fetchAll();
 		$events = [];
@@ -64,7 +64,8 @@ class RecipesController extends BaseController
 			'quantityUnits' => $this->getDatabase()->quantity_units()->orderBy('name', 'COLLATE NOCASE'),
 			'quantityUnitConversionsResolved' => $this->getDatabase()->quantity_unit_conversions_resolved(),
 			'mealplanSections' => $this->getDatabase()->meal_plan_sections()->orderBy('sort_number'),
-			'usedMealplanSections' => $this->getDatabase()->meal_plan_sections()->where("id IN (SELECT section_id FROM meal_plan WHERE $mealPlanWhereTimespan)")->orderBy('sort_number')
+			'usedMealplanSections' => $this->getDatabase()->meal_plan_sections()->where("id IN (SELECT section_id FROM meal_plan WHERE $mealPlanWhereTimespan)")->orderBy('sort_number'),
+			'weekRecipe' => $this->getDatabase()->recipes()->where("type = 'mealplan-week' AND name = LTRIM(STRFTIME('%Y-%W', DATE('$start')), '0')")->fetch()
 		]);
 	}
 
diff --git a/migrations/0217.sql b/migrations/0217.sql
new file mode 100644
index 00000000..3845c27a
--- /dev/null
+++ b/migrations/0217.sql
@@ -0,0 +1,27 @@
+DROP VIEW meal_plan_internal_recipe_relation;
+CREATE VIEW meal_plan_internal_recipe_relation
+AS
+
+-- Relation between a meal plan (day) and the corresponding internal recipe(s)
+
+SELECT mp.day, r.id AS recipe_id
+FROM meal_plan mp
+JOIN recipes r
+	ON r.name = CAST(mp.day AS TEXT)
+	AND r.type = 'mealplan-day'
+
+UNION
+
+SELECT mp.day, r.id AS recipe_id
+FROM meal_plan mp
+JOIN recipes r
+	ON r.name = LTRIM(STRFTIME('%Y-%W', mp.day), '0')
+	AND r.type = 'mealplan-week'
+
+UNION
+
+SELECT mp.day, r.id AS recipe_id
+FROM meal_plan mp
+JOIN recipes r
+	ON r.name = CAST(mp.day AS TEXT) || '#' || CAST(mp.id AS TEXT)
+	AND r.type = 'mealplan-shadow';
diff --git a/public/viewjs/mealplan.js b/public/viewjs/mealplan.js
index 38b8a720..e5241a24 100644
--- a/public/viewjs/mealplan.js
+++ b/public/viewjs/mealplan.js
@@ -73,29 +73,28 @@ $(".calendar").each(function()
 				</div> \
 			</div>');
 
-			var weekRecipeName = view.start.year().toString() + "-" + ((view.start.week() - 1).toString().padStart(2, "0")).toString();
-			var weekRecipe = FindObjectInArrayByPropertyValue(internalRecipes, "name", weekRecipeName);
-
 			var weekCosts = 0;
 			var weekRecipeOrderMissingButtonHtml = "";
 			var weekRecipeConsumeButtonHtml = "";
 			var weekCostsHtml = "";
 			if (weekRecipe !== null)
 			{
+				var weekRecipeResolved = FindObjectInArrayByPropertyValue(recipesResolved, "recipe_id", weekRecipe.id);
+
 				if (Grocy.FeatureFlags.GROCY_FEATURE_FLAG_STOCK_PRICE_TRACKING)
 				{
-					weekCosts = FindObjectInArrayByPropertyValue(recipesResolved, "recipe_id", weekRecipe.id).costs;
+					weekCosts = weekRecipeResolved.costs;
 					weekCostsHtml = __t("Week costs") + ': <span class="locale-number locale-number-currency">' + weekCosts.toString() + "</span> ";
 				}
 
 				var weekRecipeOrderMissingButtonDisabledClasses = "";
-				if (FindObjectInArrayByPropertyValue(recipesResolved, "recipe_id", weekRecipe.id).need_fulfilled_with_shopping_list == 1)
+				if (weekRecipeResolved.need_fulfilled_with_shopping_list == 1)
 				{
 					weekRecipeOrderMissingButtonDisabledClasses = "disabled";
 				}
 
 				var weekRecipeConsumeButtonDisabledClasses = "";
-				if (FindObjectInArrayByPropertyValue(recipesResolved, "recipe_id", weekRecipe.id).need_fulfilled == 0 || weekCosts == 0)
+				if (weekRecipeResolved.need_fulfilled == 0 || weekCosts == 0)
 				{
 					weekRecipeConsumeButtonDisabledClasses = "disabled";
 				}
diff --git a/views/mealplan.blade.php b/views/mealplan.blade.php
index d573132f..9b6747ef 100644
--- a/views/mealplan.blade.php
+++ b/views/mealplan.blade.php
@@ -75,9 +75,10 @@
 
 @section('content')
 <script>
-	var fullcalendarEventSources = {!! json_encode(array($fullcalendarEventSources)) !!}
-	var internalRecipes = {!! json_encode($internalRecipes) !!}
-	var recipesResolved = {!! json_encode($recipesResolved) !!}
+	var fullcalendarEventSources = {!! json_encode(array($fullcalendarEventSources)) !!};
+	var internalRecipes = {!! json_encode($internalRecipes) !!};
+	var recipesResolved = {!! json_encode($recipesResolved) !!};
+	var weekRecipe = {!! json_encode($weekRecipe) !!};
 
 	Grocy.QuantityUnits = {!! json_encode($quantityUnits) !!};
 	Grocy.QuantityUnitConversionsResolved = {!! json_encode($quantityUnitConversionsResolved) !!};