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 019594d..5aff47c 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
@@ -146,7 +146,7 @@ public class JavaAnnotationsMojoDescriptorExtractor
 
             if ( !isMojoAnnnotatedClassCandidate( mojoAnnotatedClass ) )
             {
-
+                // we don't scan sources for classes without mojo annotations
                 continue;
             }
 
diff --git a/maven-plugin-tools-annotations/src/main/java/org/apache/maven/tools/plugin/annotations/scanner/DefaultMojoAnnotationsScanner.java b/maven-plugin-tools-annotations/src/main/java/org/apache/maven/tools/plugin/annotations/scanner/DefaultMojoAnnotationsScanner.java
index 1c932fe..bc7147e 100644
--- a/maven-plugin-tools-annotations/src/main/java/org/apache/maven/tools/plugin/annotations/scanner/DefaultMojoAnnotationsScanner.java
+++ b/maven-plugin-tools-annotations/src/main/java/org/apache/maven/tools/plugin/annotations/scanner/DefaultMojoAnnotationsScanner.java
@@ -230,6 +230,7 @@ public class DefaultMojoAnnotationsScanner
 
     private MojoAnnotatedClass isStoreClass( MojoAnnotatedClass mojoAnnotatedClass )
     {
+        // see MPLUGIN-206 we can have intermediate classes without annotations
         if ( mojoAnnotatedClass == null )
         {
             return null;