Use the binary package version in Version.fetch_source() if the

source version is not specified (i.e. in the normal case).

1 files changed, 2 insertions, 1 deletions

diff --git a/apt/package.py b/apt/package.py
index 6bf9554b..7c739aab 100644
--- a/apt/package.py
+++ b/apt/package.py
@@ -537,9 +537,10 @@ class Version(object):
         dsc = None
         record = self._records
         src.lookup(record.source_pkg)
+        source_version = record.source_ver or self._cand.ver_str
 
         try:
-            while record.source_ver != src.version:
+            while source_version != src.version:
                 src.lookup(record.source_pkg)
         except AttributeError:
             raise ValueError("No source for %r" % self)