diff --git a/flatpak_builder_lint/checks/desktop.py b/flatpak_builder_lint/checks/desktop.py
index 104c446b..aeb092ca 100644
--- a/flatpak_builder_lint/checks/desktop.py
+++ b/flatpak_builder_lint/checks/desktop.py
@@ -44,6 +44,7 @@ def _validate(self, path: str, appid: str) -> None:
             return None
 
         if len(appstream.components(appstream_path)) != 1:
+            self.errors.add("appstream-multiple-components")
             return None
 
         if appstream.component_type(appstream_path) not in (
diff --git a/flatpak_builder_lint/checks/screenshots.py b/flatpak_builder_lint/checks/screenshots.py
index 67aa2eb4..ed0e3478 100644
--- a/flatpak_builder_lint/checks/screenshots.py
+++ b/flatpak_builder_lint/checks/screenshots.py
@@ -27,6 +27,7 @@ def check_repo(self, path: str) -> None:
                 return
 
             if len(appstream.components(appstream_path)) != 1:
+                self.errors.add("appstream-multiple-components")
                 return
 
             if appstream.component_type(appstream_path) not in (