diff --git a/ChangeLog b/ChangeLog
index c6a923dca6..0c959123dc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+Wed Aug 10 21:27:19 2011  Tanaka Akira  <akr@fsij.org>
+
+	* lib/net/pop.rb: fix typo in document.
+
+	* lib/net/http.rb: ditto.
+
+	* lib/net/imap.rb: ditto.
+
 Wed Aug 10 19:30:00 2011  Kenta Murata  <mrkn@mrkn.jp>
 
 	* complex.c (nucomp_rationalize): calls rationalize of real part if
diff --git a/lib/net/http.rb b/lib/net/http.rb
index 7b9ec4f568..cd2c110f93 100644
--- a/lib/net/http.rb
+++ b/lib/net/http.rb
@@ -507,7 +507,7 @@ module Net   #:nodoc:
       BufferedIO
     end
 
-    # call-seq:
+    # :call-seq:
     #   HTTP.start(address, port, p_addr, p_port, p_user, p_pass, &block)
     #   HTTP.start(address, port=nil, p_addr=nil, p_port=nil, p_user=nil, p_pass=nil, opt, &block)
     #
diff --git a/lib/net/imap.rb b/lib/net/imap.rb
index 724bc08e3b..06e1a30094 100644
--- a/lib/net/imap.rb
+++ b/lib/net/imap.rb
@@ -980,7 +980,7 @@ module Net
     @@authenticators = {}
     @@max_flag_count = 10000
 
-    # call-seq:
+    # :call-seq:
     #    Net::IMAP.new(host, options = {})
     #
     # Creates a new Net::IMAP object and connects it to the specified
diff --git a/lib/net/pop.rb b/lib/net/pop.rb
index 7e14246d16..be1eed1297 100644
--- a/lib/net/pop.rb
+++ b/lib/net/pop.rb
@@ -326,7 +326,7 @@ module Net
 
     @ssl_params = nil
 
-    # call-seq:
+    # :call-seq:
     #    Net::POP.enable_ssl(params = {})
     #
     # Enable SSL for all new instances.
@@ -444,7 +444,7 @@ module Net
       return !@ssl_params.nil?
     end
 
-    # call-seq:
+    # :call-seq:
     #    Net::POP#enable_ssl(params = {})
     #
     # Enables SSL for this instance.  Must be called before the connection is