diff --git a/maven-plugin-tools-annotations/src/main/java/org/apache/maven/tools/plugin/annotations/JavaAnnotationsMojoDescriptorExtractor.java b/maven-plugin-tools-annotations/src/main/java/org/apache/maven/tools/plugin/annotations/JavaAnnotationsMojoDescriptorExtractor.java
index cb7fed6..b81ab5c 100644
--- a/maven-plugin-tools-annotations/src/main/java/org/apache/maven/tools/plugin/annotations/JavaAnnotationsMojoDescriptorExtractor.java
+++ b/maven-plugin-tools-annotations/src/main/java/org/apache/maven/tools/plugin/annotations/JavaAnnotationsMojoDescriptorExtractor.java
@@ -64,7 +64,7 @@ public class JavaAnnotationsMojoDescriptorExtractor
     /**
      * @requirement
      */
-    MojoAnnotationsScanner mojoAnnotationsScanner;
+    private MojoAnnotationsScanner mojoAnnotationsScanner;
 
     public List<MojoDescriptor> execute( MavenProject project, PluginDescriptor pluginDescriptor )
         throws ExtractionException, InvalidPluginDescriptorException