diff --git a/.phpmd.xml b/.phpmd.xml
new file mode 100644
index 0000000000..c54077ad11
--- /dev/null
+++ b/.phpmd.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0"?>
+<ruleset name="My first PHPMD rule set"
+         xmlns="http://pmd.sf.net/ruleset/1.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://pmd.sf.net/ruleset/1.0.0
+                     http://pmd.sf.net/ruleset_xml_schema.xsd"
+         xsi:noNamespaceSchemaLocation="
+                     http://pmd.sf.net/ruleset_xml_schema.xsd">
+    <description>
+        PHPMD ruleset for friendica code.
+    </description>
+
+    <rule ref="rulesets/codesize.xml/ExcessiveClassComplexity">
+        <priority>3</priority>
+        <properties>
+            <property name="maximum" value="500" />
+        </properties>
+    </rule>
+    <rule ref="rulesets/codesize.xml/CyclomaticComplexity">
+        <priority>3</priority>
+        <properties>
+            <property name="reportLevel" value="100" />
+        </properties>
+    </rule>
+
+</ruleset>