diff --git a/lib/spack/spack/spec.py b/lib/spack/spack/spec.py
index abe17a8f2bc..0a55ec5d760 100644
--- a/lib/spack/spack/spec.py
+++ b/lib/spack/spack/spec.py
@@ -835,7 +835,6 @@ def concretize(self):
         changed = True
         force = False
 
-        # Loops forever here in my implementation
         while changed:
             changes = (self.normalize(force=force),
                        self._expand_virtual_packages(),