diff --git a/mingw-w64-headers-sigset_t.patch b/mingw-w64-headers-sigset_t.patch
new file mode 100644
index 0000000..5ee9213
--- /dev/null
+++ b/mingw-w64-headers-sigset_t.patch
@@ -0,0 +1,18 @@
+--- include/sys/types.h
++++ include/sys/types.h
+@@ -117,9 +117,13 @@
+ 
+ #ifndef _SIGSET_T_
+ #define _SIGSET_T_
+-typedef int	_sigset_t;
++#ifdef _WIN64
++__MINGW_EXTENSION typedef unsigned long long _sigset_t;
++#else
++typedef unsigned long	_sigset_t;
++#endif
+ 
+-#ifndef _NO_OLDNAMES
++#ifndef _POSIX
+ typedef _sigset_t	sigset_t;
+ #endif
+ #endif	/* Not _SIGSET_T_ */
diff --git a/mingw32-headers.spec b/mingw32-headers.spec
index 8c7e490..cc693ed 100644
--- a/mingw32-headers.spec
+++ b/mingw32-headers.spec
@@ -12,6 +12,7 @@ URL:            http://www.mingw.org/
 Source0:        mingw-w64-headers-%{version}.tar.bz2
 Source1000:     %{name}-rpmlintrc
 Patch0:         mingw-w64-headers-1.0b.20100730-winsock.patch
+Patch1:         mingw-w64-headers-sigset_t.patch
 
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
@@ -27,6 +28,7 @@ MinGW Win64 headers.
 %prep
 %setup -q -n mingw-w64-headers-%{version}
 %patch0 -p1
+%patch1 -p0
 
 %build
 ./configure --host=%{_mingw32_target} \