diff --git a/tasks/main.yaml b/tasks/main.yaml
index e290d4d..29ef4b4 100644
--- a/tasks/main.yaml
+++ b/tasks/main.yaml
@@ -30,3 +30,4 @@
 
 - name: Modify mimetypes
   ansible.builtin.include_tasks: mimetypes.yaml
+  when: nginx.mimetypes is not string and nginx.mimetypes is iterable and nginx.mimetypes is mapping