diff --git a/doclet/README.md b/doclet/README.md
index 6f41638..f7bfa1e 100644
--- a/doclet/README.md
+++ b/doclet/README.md
@@ -6,4 +6,4 @@ This doclet generates the play-clj doc site.
 2. Run `lein uberjar` in this directory
 3. Run the following command in this directory:
 
-`javadoc -sourcepath path/to/libgdx/gdx/src/ -subpackages com.badlogic -doclet play_clj_doclet.core.Start -docletpath target/play-clj-doclet-0.0.1-SNAPSHOT-standalone.jar`
+`javadoc -classpath /path/to/libgdx/gdx/src/:/path/to/libgdx/extensions/gdx-box2d/gdx-box2d/src/ -subpackages com.badlogic -doclet play_clj_doclet.core.Start -docletpath target/play-clj-doclet-0.0.1-SNAPSHOT-standalone.jar`