diff --git a/lib/spack/spack/environment/environment.py b/lib/spack/spack/environment/environment.py
index 741a1cc8ade..c358b371729 100644
--- a/lib/spack/spack/environment/environment.py
+++ b/lib/spack/spack/environment/environment.py
@@ -1373,6 +1373,7 @@ def concretize(self, force=False, tests=False):
             self.concretized_user_specs = old_concretized_user_specs
             self.concretized_order = old_concretized_order
             self.specs_by_hash = old_specs_by_hash
+            raise
 
     def _get_specs_to_concretize(
         self,