Javadoc generation with includeDependencySources=true crashes when any of those dependencies have scope=provided dependencies

<configuration>
              <includeDependencySources>true</includeDependencySources>
              <dependencySourceIncludes>
                <dependencySourceInclude>org.jbpm:*</dependencySourceInclude>
              </dependencySourceIncludes>
            </configuration>

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 13.620s
[INFO] Finished at: Tue Jan 17 15:05:07 CET 2012
[INFO] Final Memory: 17M/441M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-javadoc-plugin:2.8:javadoc (javadoc-javadoc) on project jbpm-distribution: An error has occurred in JavaDocs report generation:
[ERROR] Exit code: 1 - /home/gdesmet/projects/jboss/droolsjbpm/jbpm/jbpm-distribution/target/distro-javadoc-sources/jbpm-flow-5.3.0-SNAPSHOT-sources/org/jbpm/osgi/flow/core/Activator.java:26: package org.osgi.framework does not exist
[ERROR] import org.osgi.framework.BundleActivator;

<dependency>
      <groupId>org.apache.felix</groupId>
      <artifactId>org.osgi.core</artifactId>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>org.apache.felix</groupId>
      <artifactId>org.osgi.compendium</artifactId>
      <scope>provided</scope>
    </dependency>