diff --git a/common/JackLibGlobals.h b/common/JackLibGlobals.h
index f95739d6..a2f87ed1 100644
--- a/common/JackLibGlobals.h
+++ b/common/JackLibGlobals.h
@@ -32,12 +32,14 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 #include <assert.h>
 #include <signal.h>
 
+#ifdef WIN32
 #ifdef __MINGW32__
 #include <sys/types.h>
 typedef _sigset_t sigset_t;
 #else
 typedef HANDLE sigset_t;
 #endif
+#endif
 
 namespace Jack
 {