diff --git a/scss/__init__.py b/scss/__init__.py
index <HASH>..<HASH> 100644
--- a/scss/__init__.py
+++ b/scss/__init__.py
@@ -1760,7 +1760,7 @@ class Scss(object):
         old_media = None
         old_property = None
 
-        wrap = textwrap.TextWrapper(break_long_words=False)
+        wrap = textwrap.TextWrapper(break_long_words=False, break_on_hyphens=False)
         wrap.wordsep_re = re.compile(r'(?<=,)(\s*)')
         wrap = wrap.wrap
Do not break rules on hypens