--- a/hgext3rd/evolve/__init__.py	Tue Feb 28 14:31:18 2017 +0100
+++ b/hgext3rd/evolve/__init__.py	Tue Feb 28 14:31:28 2017 +0100
@@ -3758,11 +3758,7 @@
         opts['heads'] = wireproto.encodelist(heads)
     if common is not None:
         opts['common'] = wireproto.encodelist(common)
-    if util.safehasattr(self, '_callcompressable'):
-        f = self._callcompressable("evoext_pullobsmarkers_0", **opts)
-    else:
-        f = self._callstream("evoext_pullobsmarkers_0", **opts)
-        f = self._decompress(f)
+    f = self._callcompressable("evoext_pullobsmarkers_0", **opts)
     length = int(f.read(20))
     chunk = 4096
     current = 0