diff --git a/method/cvs.py b/method/cvs.py
index 6cb30b4..b660cbf 100644
--- a/method/cvs.py
+++ b/method/cvs.py
@@ -198,7 +198,7 @@ class CvsBlame(Method):
             path = path[len(cwd):]
 
         cmd = ("/usr/bin/cvs", 'annotate', path)
-        pipe = Popen(cmd, stdout=PIPE)
+        pipe = Popen(cmd, stdout=PIPE, stderr=PIPE)
 
         tokens = []
         max_rev = 0