diff --git a/lib/spack/spack/solver/asp.py b/lib/spack/spack/solver/asp.py
index 71ba84f2b74..6693678d9f6 100644
--- a/lib/spack/spack/solver/asp.py
+++ b/lib/spack/spack/solver/asp.py
@@ -863,7 +863,6 @@ def visit(node):
         if not setup.concretize_everything:
             self.control.load(os.path.join(parent_dir, "when_possible.lp"))
 
-
         has_propagation = False
         for spec in specs:
             for dep in spec.traverse(root=True):