diff --git a/README.md b/README.md
deleted file mode 100755
index d4ef9b9..0000000
--- a/README.md
+++ /dev/null
@@ -1,37 +0,0 @@
-# [Bld](https://rife2.com/bld) Extension to Perform Static Code Analysis with [PMD](https://pmd.github.io/)
-
-
-[![License (3-Clause BSD)](https://img.shields.io/badge/license-BSD%203--Clause-blue.svg?style=flat-square)](http://opensource.org/licenses/BSD-3-Clause)
-[![Java](https://img.shields.io/badge/java-17%2B-blue)](https://www.oracle.com/java/technologies/javase/jdk17-archive-downloads.html)
-[![GitHub CI](https://github.com/rife2/bld-pmd/actions/workflows/bld.yml/badge.svg)](https://github.com/rife2/bld-pmd/actions/workflows/bld.yml)
-
-To check all source code using the [java quickstart rule](https://pmd.github.io/pmd/pmd_rules_java.html).
-
-```java
-@BuildCommand
-public void pmd() throws Exception {
-    new PmdOperation(this).execute();
-}
-```
-```text
-./bld pmd test
-```
-
-To check the main source code using a custom rule, [java error prone rule](https://pmd.github.io/pmd/pmd_rules_java.html) and failing on any violation.
-
-```java
-@BuildCommand
-public void pmdMain() throws Exception {
-    new PmdOperation(this)
-        .failOnValidation(true)
-        .addInputPath(project.srcMainDirectory().toPath())
-        .addRuletSet("config/pmd.xml", "category/java/errorprone.xml");
-        .execute();
-}
-```
-
-```text
-./dld compile pmdMain
-```
-
-Please check the [PmdOperation documentation](https://rife2.github.io/bld-pmd/rife/bld/extension/PmdOperation.html#method-summary) for all available configuration options.
\ No newline at end of file
diff --git a/src/main/java/rife/bld/extension/PmdOperation.java b/src/main/java/rife/bld/extension/PmdOperation.java
index a8ea894..a9499dc 100644
--- a/src/main/java/rife/bld/extension/PmdOperation.java
+++ b/src/main/java/rife/bld/extension/PmdOperation.java
@@ -43,13 +43,12 @@ public class PmdOperation extends AbstractOperation<PmdOperation> {
     /**
      * The default rule set.
      */
-    public static final String RULE_SET_DEFAULT = "rulesets/java/quickstart.xml";
+    public static final String RULESET_DEFAULT = "rulesets/java/quickstart.xml";
     private static final Logger LOGGER = Logger.getLogger(PmdOperation.class.getName());
     private static final String PMD_DIR = "pmd";
 
     /**
      * The cache location.
-     *
      */
     Path cache;
     /**
@@ -155,21 +154,21 @@ public class PmdOperation extends AbstractOperation<PmdOperation> {
 
         inputPaths.add(project.srcMainDirectory().toPath());
         inputPaths.add(project.srcTestDirectory().toPath());
-        ruleSets.add(RULE_SET_DEFAULT);
+        ruleSets.add(RULESET_DEFAULT);
     }
 
     /**
-     * Adds paths to source files, or directories containing source files to analyze.
+     * Adds the path to a source file, or directory containing source files to analyze.
      *
      * @see #inputPaths(Path...)
      */
-    public PmdOperation addInputPath(Path... inputPath) {
-        inputPaths.addAll(List.of(inputPath));
+    public PmdOperation addInputPath(Path inputPath) {
+        inputPaths.add(inputPath);
         return this;
     }
 
     /**
-     * Adds new rule set paths.
+     * Adds a new rule set path.
      * <p>
      * The built-in rule set paths are:
      * <ul>
@@ -186,8 +185,8 @@ public class PmdOperation extends AbstractOperation<PmdOperation> {
      *
      * @see #ruleSets(String...)
      */
-    public PmdOperation addRuleSet(String... ruleSet) {
-        ruleSets.addAll(List.of(ruleSet));
+    public PmdOperation addRuleSet(String ruleSet) {
+        ruleSets.add(ruleSet);
         return this;
     }
 
diff --git a/src/test/java/rife/bld/extension/PmdOperationTest.java b/src/test/java/rife/bld/extension/PmdOperationTest.java
index 1dea825..683b5c0 100644
--- a/src/test/java/rife/bld/extension/PmdOperationTest.java
+++ b/src/test/java/rife/bld/extension/PmdOperationTest.java
@@ -69,35 +69,28 @@ public class PmdOperationTest {
     void testJavaErrorProne() {
         var pmd = pmdOperation.ruleSets("category/java/errorprone.xml");
         assertThat(pmd.performPmdAnalysis(TEST, pmd.initConfiguration(COMMAND_NAME)))
-                .as("many errors").isGreaterThan(0);
-    }
-
-    @Test
-    void testJavaCodeStyleAndErrorProne() {
-        var pmd = pmdOperation.addRuleSet("category/java/codestyle.xml", "category/java/errorprone.xml");
-        assertThat(pmd.performPmdAnalysis(TEST, pmd.initConfiguration(COMMAND_NAME)))
-                .as("many errors").isGreaterThan(0);
+                .as("no errors").isGreaterThan(0);
     }
 
     @Test
     void testJavaCodeStyle() {
         var pmd = pmdOperation.ruleSets("category/java/codestyle.xml");
         assertThat(pmd.performPmdAnalysis(TEST, pmd.initConfiguration(COMMAND_NAME)))
-                .as("many errors").isGreaterThan(0);
+                .as("no errors").isGreaterThan(0);
     }
 
     @Test
     void testJavaDesign() {
         var pmd = pmdOperation.ruleSets("category/java/design.xml");
         assertThat(pmd.performPmdAnalysis(TEST, pmd.initConfiguration(COMMAND_NAME)))
-                .as("many errors").isGreaterThan(0);
+                .as("no errors").isGreaterThan(0);
     }
 
     @Test
     void testJavaDocumentation() {
         var pmd = pmdOperation.ruleSets("category/java/documentation.xml");
         assertThat(pmd.performPmdAnalysis(TEST, pmd.initConfiguration(COMMAND_NAME)))
-                .as("many errors").isGreaterThan(0);
+                .as("no errors").isGreaterThan(0);
     }
 
     @Test