---
 apt/package.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/apt/package.py b/apt/package.py
index 86c7eb6..e864c68 100644
--- a/apt/package.py
+++ b/apt/package.py
@@ -120,9 +120,11 @@ class BaseDependency(object):
 
     @property
     def version(self):
-        """The target version or None.
+        """The target version or an empty string.
 
-        It is None if and only if relation is the empty string."""
+        Note that the version is only an empty string in case of an unversioned
+        dependency. In this case the relation is also an empty string.
+        """
         return self._dep.target_ver
 
     @property
-- 
1.8.3.2


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