diff --git a/result/namespaces/err_10.xml b/result/namespaces/err_10.xml
new file mode 100644
index 00000000..e69de29b
diff --git a/result/namespaces/err_10.xml.err b/result/namespaces/err_10.xml.err
new file mode 100644
index 00000000..4e9d3481
--- /dev/null
+++ b/result/namespaces/err_10.xml.err
@@ -0,0 +1,3 @@
+./test/namespaces/err_10.xml:1: error: Attribute xmlns redefined
+<tst xmlns="http://example.com/" xmlns="http://example.com/"/>
+                                                            ^
diff --git a/result/namespaces/err_11.xml b/result/namespaces/err_11.xml
new file mode 100644
index 00000000..e69de29b
diff --git a/result/namespaces/err_11.xml.err b/result/namespaces/err_11.xml.err
new file mode 100644
index 00000000..32acd938
--- /dev/null
+++ b/result/namespaces/err_11.xml.err
@@ -0,0 +1,3 @@
+./test/namespaces/err_11.xml:1: error: Attribute xmlns:a redefined
+<tst xmlns:a="http://example.com/" xmlns:a="http://example.com/"/>
+                                                                ^
diff --git a/test/namespaces/err_10.xml b/test/namespaces/err_10.xml
new file mode 100644
index 00000000..cf362613
--- /dev/null
+++ b/test/namespaces/err_10.xml
@@ -0,0 +1 @@
+<tst xmlns="http://example.com/" xmlns="http://example.com/"/>
diff --git a/test/namespaces/err_11.xml b/test/namespaces/err_11.xml
new file mode 100644
index 00000000..9d819394
--- /dev/null
+++ b/test/namespaces/err_11.xml
@@ -0,0 +1 @@
+<tst xmlns:a="http://example.com/" xmlns:a="http://example.com/"/>