diff --git a/var/spack/repos/builtin/packages/varscan/package.py b/var/spack/repos/builtin/packages/varscan/package.py
index 7762c98da3d..fc9f506422b 100644
--- a/var/spack/repos/builtin/packages/varscan/package.py
+++ b/var/spack/repos/builtin/packages/varscan/package.py
@@ -36,5 +36,5 @@ def install(self, spec, prefix):
                     script, **kwargs)
 
     def setup_environment(self, spack_env, run_env):
-        run_env.set('VARSCAN_HOME', self.prefix)
+        run_env.set('VARSCAN_HOME', self.prefix.jar)
         run_env.set('CLASSPATH', self.prefix.jar)