diff --git a/mercurial/hg.py b/mercurial/hg.py
--- a/mercurial/hg.py
+++ b/mercurial/hg.py
@@ -157,9 +157,9 @@ def clone(ui, source, dest=None, pull=Fa
         # we lock here to avoid premature writing to the target
         dest_lock = lock.lock(os.path.join(dest_path, ".hg", "lock"))
 
-	# we need to remove the (empty) data dir in dest so copyfiles
-	# can do its work
-	os.rmdir(os.path.join(dest_path, ".hg", "data"))
+        # we need to remove the (empty) data dir in dest so copyfiles
+        # can do its work
+        os.rmdir(os.path.join(dest_path, ".hg", "data"))
         files = "data 00manifest.d 00manifest.i 00changelog.d 00changelog.i"
         for f in files.split():
             src = os.path.join(source, ".hg", f)
@@ -170,8 +170,8 @@ def clone(ui, source, dest=None, pull=Fa
                 if inst.errno != errno.ENOENT:
                     raise
 
-	# we need to re-init the repo after manually copying the data
-	# into it
+        # we need to re-init the repo after manually copying the data
+        # into it
         dest_repo = repository(ui, dest)
 
     else: