diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index ac799bac0..f9192eda8 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,7 @@
+2012-10-26  Corinna Vinschen  <corinna@vinschen.de>
+
+	* include/cygwin/signal.h (sigset_t): Define here.
+
 2012-10-24  Yaakov Selkowitz  <yselkowitz@users.sourceforge.net>
 
 	* Makefile.in (DLL_IMPORTS): Use system import libraries for
diff --git a/winsup/cygwin/include/cygwin/signal.h b/winsup/cygwin/include/cygwin/signal.h
index 77dde3c99..7aecf1737 100644
--- a/winsup/cygwin/include/cygwin/signal.h
+++ b/winsup/cygwin/include/cygwin/signal.h
@@ -190,6 +190,8 @@ enum
 					   perform notification */
 };
 
+typedef __uint32_t sigset_t;
+
 typedef void (*_sig_func_ptr)(int);
 
 struct sigaction