diff --git a/python/sepolgen/src/sepolgen/refpolicy.py b/python/sepolgen/src/sepolgen/refpolicy.py
index c30a8c70..e3dd33a2 100644
--- a/python/sepolgen/src/sepolgen/refpolicy.py
+++ b/python/sepolgen/src/sepolgen/refpolicy.py
@@ -755,11 +755,11 @@ class FilesystemUse(Leaf):
 
     def to_string(self):
         s = ""
-        if self.type == XATTR:
+        if self.type == self.XATTR:
             s = "fs_use_xattr "
-        elif self.type == TRANS:
+        elif self.type == self.TRANS:
             s = "fs_use_trans "
-        elif self.type == TASK:
+        elif self.type == self.TASK:
             s = "fs_use_task "
 
         return "%s %s %s;" % (s, self.filesystem, str(self.context))