diff --git a/doc/changelog.txt b/doc/changelog.txt
index 2f0cf038..f9eefef7 100644
--- a/doc/changelog.txt
+++ b/doc/changelog.txt
@@ -35,6 +35,7 @@ Changes:
   Closes: GH bug #424
 - checking: Disable twill page refreshing.
   Closes: GH bug #423
+- checking: The default number of checking threads is 10 now instead of 100.
 
 Fixes:
 - logging: Status was printed every second regardless of the
diff --git a/linkcheck/configuration/__init__.py b/linkcheck/configuration/__init__.py
index 9167fd6b..88d761df 100644
--- a/linkcheck/configuration/__init__.py
+++ b/linkcheck/configuration/__init__.py
@@ -145,7 +145,7 @@ class Configuration (dict):
         self["nntpserver"] = os.environ.get("NNTP_SERVER", None)
         self["proxy"] = urllib.getproxies()
         self["sslverify"] = True
-        self["threads"] = 100
+        self["threads"] = 10
         self["timeout"] = 60
         self["aborttimeout"] = 300
         self["recursionlevel"] = -1