diff --git a/tests/plugins/simply/add_header_redefinition/nested_block.conf b/tests/plugins/simply/add_header_redefinition/nested_block.conf
new file mode 100644
index 0000000..a1375ac
--- /dev/null
+++ b/tests/plugins/simply/add_header_redefinition/nested_block.conf
@@ -0,0 +1,12 @@
+server {
+  add_header X-Frame-Options "DENY" always;
+  location / {
+    location /some {
+      add_header X-Frame-Options "DENY" always;
+    }
+
+    location /another {
+      add_header X-Foo foo;
+    }
+  }
+}
\ No newline at end of file