diff --git a/doc/NEWS-2.5.0 b/doc/NEWS-2.5.0
index e7613d5caa..221c0328c1 100644
--- a/doc/NEWS-2.5.0
+++ b/doc/NEWS-2.5.0
@@ -525,8 +525,6 @@ with all sufficient information, see the ChangeLog file or Redmine
 
   * Removed "ubygems.rb" file from stdlib. It's needless since Ruby 1.9.
 
-=== C API updates
-
 === Supported platform changes
 
 * Drop support of NaCl platform
diff --git a/doc/NEWS-2.6.0 b/doc/NEWS-2.6.0
index 07e8518841..07614f66e2 100644
--- a/doc/NEWS-2.6.0
+++ b/doc/NEWS-2.6.0
@@ -602,8 +602,6 @@ sufficient information, see the ChangeLog file or Redmine
     commands even if the path starts with the pipe character <code>'|'</code>.
     This follows [Feature #14245].
 
-=== C API updates
-
 === Implementation improvements
 
 * Speedup Proc#call because we don't need to care about <code>$SAFE</code>