diff --git a/src/Services/ProjectSystem/ProjectBuildHelper.php b/src/Services/ProjectSystem/ProjectBuildHelper.php
index 269c7e4c..824923cb 100644
--- a/src/Services/ProjectSystem/ProjectBuildHelper.php
+++ b/src/Services/ProjectSystem/ProjectBuildHelper.php
@@ -63,17 +63,19 @@ class ProjectBuildHelper
      */
     public function getMaximumBuildableCount(Project $project): int
     {
+        $bom_entries = $project->getBomEntries();
+        if ($bom_entries->isEmpty()) {
+            return 0;
+        }
         $maximum_buildable_count = PHP_INT_MAX;
-        foreach ($project->getBomEntries() as $bom_entry) {
+        foreach ($bom_entries as $bom_entry) {
             //Skip BOM entries without a part (as we can not determine that)
             if (!$bom_entry->isPartBomEntry()) {
                 continue;
             }
-
             //The maximum buildable count for the whole project is the minimum of all BOM entries
             $maximum_buildable_count = min($maximum_buildable_count, $this->getMaximumBuildableCountForBOMEntry($bom_entry));
         }
-
         return $maximum_buildable_count;
     }
 
diff --git a/templates/projects/build/build.html.twig b/templates/projects/build/build.html.twig
index 783c3794..6489256d 100644
--- a/templates/projects/build/build.html.twig
+++ b/templates/projects/build/build.html.twig
@@ -8,7 +8,8 @@
 {% endblock %}
 
 {% block card_content %}
-    {% set can_build = buildHelper.projectBuildable(project, number_of_builds) %}
+    {% set bom_empty = project.bomEntries | length == 0 %}
+    {% set can_build = not bom_empty and buildHelper.projectBuildable(project, number_of_builds) %}
     {% import "components/projects.macro.html.twig" as project_macros %}
 
     {% if project.status is not empty and project.status != "in_production" %}
@@ -18,7 +19,10 @@
     {% endif %}
 
     <div class="alert {% if can_build %}alert-success{% else %}alert-danger{% endif %}" role="alert">
-        {% if not can_build %}
+        {% if bom_empty %}
+            <h5><i class="fa-solid fa-circle-exclamation fa-fw"></i> {% trans %}project.builds.no_bom_entries{% endtrans %}</h5>
+            <span class="text-muted">{% trans %}project.builds.no_bom_entries_hint{% endtrans %}</span>
+        {% elseif not can_build %}
             <h5><i class="fa-solid fa-circle-exclamation fa-fw"></i> {% trans %}project.builds.build_not_possible{% endtrans %}</h5>
             <b>{% trans with {"%number_of_builds%": number_of_builds} %}project.builds.following_bom_entries_miss_instock_n{% endtrans %}</b>
             <ul>
diff --git a/templates/projects/info/_builds.html.twig b/templates/projects/info/_builds.html.twig
index fc49b50d..dc9a3c68 100644
--- a/templates/projects/info/_builds.html.twig
+++ b/templates/projects/info/_builds.html.twig
@@ -1,4 +1,5 @@
-{% set can_build = buildHelper.projectBuildable(project) %}
+{% set bom_empty = project.bomEntries | length == 0 %}
+{% set can_build = not bom_empty and buildHelper.projectBuildable(project) %}
 
 {% import "components/projects.macro.html.twig" as project_macros %}
 
@@ -9,7 +10,10 @@
 {% endif %}
 
 <div class="alert mt-2 {% if can_build %}alert-success{% else %}alert-danger{% endif %}" role="alert">
-    {% if not can_build %}
+    {% if bom_empty %}
+        <h5><i class="fa-solid fa-circle-exclamation fa-fw"></i> {% trans %}project.builds.no_bom_entries{% endtrans %}</h5>
+        <span class="text-muted">{% trans %}project.builds.no_bom_entries_hint{% endtrans %}</span>
+    {% elseif not can_build %}
         <h5><i class="fa-solid fa-circle-exclamation fa-fw"></i> {% trans %}project.builds.build_not_possible{% endtrans %}</h5>
         <b>{% trans %}project.builds.following_bom_entries_miss_instock{% endtrans %}</b>
         <ul>
@@ -27,7 +31,7 @@
     <div class="row mt-2">
         <div class="col-4">
             <div class="input-group mb-3">
-                <input type="number" min="1" class="form-control" placeholder="{% trans %}project.builds.number_of_builds{% endtrans %}" name="n" required>
+                <input type="number" min="1" class="form-control" placeholder="{% trans %}project.builds.number_of_builds{% endtrans %}" name="n" required value="1">
                 <input type="hidden" name="_redirect" value="{{  uri_without_host(app.request) }}">
                 <button class="btn btn-outline-secondary" type="submit" id="button-addon2">{% trans %}project.build.btn_build{% endtrans %}</button>
             </div>