diff --git a/lib/spack/spack/test/concretize.py b/lib/spack/spack/test/concretize.py
index 24037191347..c12aada0764 100644
--- a/lib/spack/spack/test/concretize.py
+++ b/lib/spack/spack/test/concretize.py
@@ -46,7 +46,7 @@ def check_spec(self, abstract, concrete):
         if abstract.compiler and abstract.compiler.concrete:
             self.assertEqual(abstract.compiler, concrete.compiler)
 
-        if abstract.target and abstract.target.concrete:
+        if abstract.architecture and abstract.architecture.target.concrete:
             self.assertEqual(abstract.target, concrete.target)