diff --git a/build.xml b/build.xml
index f4b462b..27d6d8e 100644
--- a/build.xml
+++ b/build.xml
@@ -10,7 +10,7 @@
 
 	<target name="compile">
 		<mkdir dir="build/classes"/>
-		<javac srcdir="src" destdir="build/classes"/>
+		<javac debug="true" srcdir="src" destdir="build/classes"/>
 	</target>
 
 	<target name="jar" depends="compile">