diff --git a/setup.py b/setup.py
index 8b68680..410b982 100755
--- a/setup.py
+++ b/setup.py
@@ -75,7 +75,11 @@ def get_version():
         if p.returncode == 0:
             result = result.decode('ascii').strip()[1:]  # strip spaces/newlines and initial v
             if '-' in result:  # not a tagged version
-                real_number, commit_count, commit_hash = result.split('-', 2)
+                try:
+                    real_number, commit_count, commit_hash = result.split('-', 2)
+                except ValueError:
+                    real_number, commit_hash = result.split('-', 2)
+                    commit_count = 0
                 version = '%s.post%s+%s' % (real_number, commit_count, commit_hash)
             else:
                 version = result