diff --git a/build.xml b/build.xml
index 9857cd2..f0c86b8 100644
--- a/build.xml
+++ b/build.xml
@@ -816,6 +817,7 @@
         <sysproperty key="jruby.compile.invokedynamic" value="true"/>
 	<sysproperty key="java.awt.headless" value="true"/>
 	<sysproperty key="jruby.home" value="${basedir}"/>
+	<sysproperty key="jruby.bindir" value="${basedir}/bin" />
 	<sysproperty key="jruby.lib" value="${lib.dir}"/>
 	<sysproperty key="jruby.compile.mode" value="@{compile.mode}"/>
 	<sysproperty key="jruby.jit.threshold" value="@{jit.threshold}"/>
@@ -871,6 +873,7 @@
 
 	<sysproperty key="java.awt.headless" value="true"/>
 	<sysproperty key="jruby.home" value="${basedir}"/>
+	<sysproperty key="jruby.bindir" value="${basedir}/bin" />
 	<sysproperty key="jruby.lib" value="${lib.dir}"/>
 	<sysproperty key="jruby.compile.mode" value="@{compile.mode}"/>
 	<sysproperty key="jruby.jit.threshold" value="@{jit.threshold}"/>