diff --git a/var/spack/repos/builtin/packages/libxml2/package.py b/var/spack/repos/builtin/packages/libxml2/package.py
index a852e4f45c6..640988d617b 100644
--- a/var/spack/repos/builtin/packages/libxml2/package.py
+++ b/var/spack/repos/builtin/packages/libxml2/package.py
@@ -105,7 +105,7 @@ def test(self):
         """Perform smoke tests on the installed package"""
         # Start with what we already have post-install
         tty.msg("test: Performing simple import test")
-        self.import_module_test()
+        self.builder.import_module_test()
 
         data_dir = self.test_suite.current_test_data_dir