First off, the JavaCC plugin's issue reporting page goes here. Sorry. Second, part of the plugin's Jelly code references a "generated-java" directory, and part references a "generated/java" directory ... so obviously, it was put into production, and given a 1.0 release, without actually testing it. My work around (in my projext.xml) looks like: <preGoal name="java:compile"> <attainGoal name="javacc:javacc-generate"/> <!-- Kludge around a typo in the JavaCC --> <ant:path id="maven.javacc.compile.src.set" location="${basedir}/target/generated-java"/> <maven:addPath id="maven.compile.src.set" refid="maven.javacc.compile.src.set"/> </preGoal>