diff --git a/mercurial/subrepo.py b/mercurial/subrepo.py
--- a/mercurial/subrepo.py
+++ b/mercurial/subrepo.py
@@ -674,8 +674,8 @@ class svnsubrepo(abstractsubrepo):
 
     @propertycache
     def _svnversion(self):
-        output, err = self._svncommand(['--version'], filename=None)
-        m = re.search(r'^svn,\s+version\s+(\d+)\.(\d+)', output)
+        output, err = self._svncommand(['--version', '--quiet'], filename=None)
+        m = re.search(r'^(\d+)\.(\d+)', output)
         if not m:
             raise util.Abort(_('cannot retrieve svn tool version'))
         return (int(m.group(1)), int(m.group(2)))
diff --git a/tests/hghave.py b/tests/hghave.py
--- a/tests/hghave.py
+++ b/tests/hghave.py
@@ -152,7 +152,7 @@ def has_docutils():
         return False
 
 def getsvnversion():
-    m = matchoutput('svn --version 2>&1', r'^svn,\s+version\s+(\d+)\.(\d+)')
+    m = matchoutput('svn --version --quiet 2>&1', r'^(\d+)\.(\d+)')
     if not m:
         return (0, 0)
     return (int(m.group(1)), int(m.group(2)))