diff --git a/ChangeLog b/ChangeLog
index 24af924e3..814217f52 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2011-05-12  Richard Frith-Macdonald <rfm@gnu.org>
+
+	* Source/GSFileHandle.m:
+	* Source/GSHTTPURLHandle.m:
+	* Source/win32/NSMessagePort.m:
+	* Source/win32/NSMessagePortNameServer.m:
+	Include/use errno.h for thread-safe errno support.
+
 2011-05-12  Richard Frith-Macdonald <rfm@gnu.org>
 
 	* Source/NSPortCoder.m: