diff --git a/.gitignore b/.gitignore
index 0fb1fde..78e7d8d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -165,3 +165,4 @@ mapping/*# pixi environments
 .pixi
 
 .vscode/
+.DS_store
diff --git a/src/rattler_build_conda_compat/recipe_sources.py b/src/rattler_build_conda_compat/recipe_sources.py
index 6485c33..441eaf5 100644
--- a/src/rattler_build_conda_compat/recipe_sources.py
+++ b/src/rattler_build_conda_compat/recipe_sources.py
@@ -43,7 +43,7 @@ def get_all_url_sources(recipe: Mapping[Any, Any]) -> Iterator[str]:
         sources = output.get("source", None)
         sources = typing.cast(ConditionalList[Source], sources)
         if sources is None:
-            return
+            continue
         sources = visit_conditional_list(sources, None)
         for source in sources:
             if "url" in source:
diff --git a/tests/data/outputs_source.yaml b/tests/data/outputs_source.yaml
index 717c4c8..7559a01 100644
--- a/tests/data/outputs_source.yaml
+++ b/tests/data/outputs_source.yaml
@@ -1,11 +1,14 @@
 outputs:
-  source:
-    - if: foo
-      then:
-        - url: https://foo.com
-    - if: bla
-      then:
-        - url: https://bar.com
-      else:
-        - url: https://baz.com
-    - url: https://qux.com
+  - package:
+      name: foo
+      version: 1.0.0
+  - source:
+      - if: foo
+        then:
+          - url: https://foo.com
+      - if: bla
+        then:
+          - url: https://bar.com
+        else:
+          - url: https://baz.com
+      - url: https://qux.com