diff --git a/lib/spack/spack/environment/environment.py b/lib/spack/spack/environment/environment.py
index 378727384ce..ea66ee7e059 100644
--- a/lib/spack/spack/environment/environment.py
+++ b/lib/spack/spack/environment/environment.py
@@ -606,7 +606,7 @@ def raise_if_invalid_exchange(self):
             msg += "change its update_method to 'symlink' or 'auto'."
             msg += f"\n  If the view at {self.root} exists already, either remove it for a"
             msg += " non-atomic update or run on a newer OS."
-        raise RuntimeError(msg)
+            raise RuntimeError(msg)
 
     def raise_if_symlink_before_exchange(self):
         if os.path.islink(self.root):