diff --git a/src/fdevent.h b/src/fdevent.h
index d6ee3f2f..7eaee471 100644
--- a/src/fdevent.h
+++ b/src/fdevent.h
@@ -8,12 +8,15 @@
 #include "settings.h"
 #include "bitset.h"
 
+#if defined HAVE_STDINT_H
+# include <stdint.h>
+#elif defined HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+
 /* select event-system */
 
 #if defined(HAVE_EPOLL_CTL) && defined(HAVE_SYS_EPOLL_H)
-# if defined HAVE_STDINT_H
-#  include <stdint.h>
-# endif
 # define USE_LINUX_EPOLL
 # include <sys/epoll.h>
 #endif
diff --git a/src/fdevent_linux_rtsig.c b/src/fdevent_linux_rtsig.c
index 624c9809..e04d9cf8 100644
--- a/src/fdevent_linux_rtsig.c
+++ b/src/fdevent_linux_rtsig.c
@@ -11,6 +11,7 @@
 #include <signal.h>
 #include <limits.h>
 
+#define __USE_GNU /* a hack in my eyes, should work with _GNU_SOURCE */
 #include <fcntl.h>
 
 #ifdef USE_LINUX_SIGIO