diff --git a/blivet/formats/swap.py b/blivet/formats/swap.py
index ce0a9dfef..e355505e7 100644
--- a/blivet/formats/swap.py
+++ b/blivet/formats/swap.py
@@ -114,7 +114,7 @@ def _getPriority(self):
 
     def _getOptions(self):
         opts = ""
-        if self.priority is not None:
+        if self.priority is not None and self.priority != -1:
             opts += "pri=%d" % self.priority
 
         return opts