diff --git a/codespeed/commits/mercurial.py b/codespeed/commits/mercurial.py
index ffe132eb..828521f3 100644
--- a/codespeed/commits/mercurial.py
+++ b/codespeed/commits/mercurial.py
@@ -63,7 +63,7 @@ def getlogs(endrev, startrev):
     if p.returncode != 0:
         raise CommitLogError(str(stderr))
     else:
-        stdout = stdout.rstrip(b'\n')  # Remove last newline
+        stdout = str(stdout).rstrip(b'\n')  # Remove last newline
         logs = []
         for log in stdout.split("=newlog=\n"):
             elements = []