diff --git a/lib/spack/spack/package.py b/lib/spack/spack/package.py
index 7648a2f8631..6d425c3dc71 100644
--- a/lib/spack/spack/package.py
+++ b/lib/spack/spack/package.py
@@ -1071,6 +1071,7 @@ def write_license_file(self, license_path):
         if self.license_url:
             license.write("""\
 # For further information on how to acquire a license, please refer to:
+#
 #\t%s
 #
 """ % self.license_url)