diff --git a/event.c b/event.c
index 21d26a23..db26f2e2 100644
--- a/event.c
+++ b/event.c
@@ -262,9 +262,31 @@ struct uwsgi_fmon *event_queue_ack_file_monitor(int id) {
 
 #ifdef UWSGI_EVENT_TIMER_USE_TIMERFD
 
-#ifndef UNBIT
+#ifndef UWSGI_EVENT_TIMER_USE_TIMERFD_NOINC
 #include <sys/timerfd.h>
-#else
+#endif
+
+#ifndef timerfd_create
+
+// timerfd support
+
+enum
+  {
+    TFD_CLOEXEC = 02000000,
+#define TFD_CLOEXEC TFD_CLOEXEC
+    TFD_NONBLOCK = 04000
+#define TFD_NONBLOCK TFD_NONBLOCK
+  };
+
+
+/* Bits to be set in the FLAGS parameter of `timerfd_settime'.  */
+enum
+  {
+    TFD_TIMER_ABSTIME = 1 << 0
+#define TFD_TIMER_ABSTIME TFD_TIMER_ABSTIME
+  };
+
+
 static int timerfd_create (clockid_t __clock_id, int __flags) {
 	return syscall(322, __clock_id, __flags);
 }
diff --git a/unbit.h b/unbit.h
index 90528978..13f96fe9 100644
--- a/unbit.h
+++ b/unbit.h
@@ -49,22 +49,3 @@ struct uidsec_struct {
 
 };
 
-
-// timerfd support
-
-enum
-  {
-    TFD_CLOEXEC = 02000000,
-#define TFD_CLOEXEC TFD_CLOEXEC
-    TFD_NONBLOCK = 04000
-#define TFD_NONBLOCK TFD_NONBLOCK
-  };
-
-
-/* Bits to be set in the FLAGS parameter of `timerfd_settime'.  */
-enum
-  {
-    TFD_TIMER_ABSTIME = 1 << 0
-#define TFD_TIMER_ABSTIME TFD_TIMER_ABSTIME
-  };
-
diff --git a/uwsgi.c b/uwsgi.c
index c815ddb1..a78da14b 100644
--- a/uwsgi.c
+++ b/uwsgi.c
@@ -651,6 +651,18 @@ options_parsed:
 	}
 
 #ifdef __linux__
+
+#ifndef CLONE_NEWUTS
+#define CLONE_NEWUTS 0x04000000
+#endif
+
+#ifndef CLONE_NEWPID
+#define CLONE_NEWPID 0x20000000
+#endif
+
+#ifndef CLONE_NEWIPC
+#define CLONE_NEWIPC 0x08000000
+#endif
 	uwsgi.ns = "/ns/001";
 	if (uwsgi.ns) {
 		void *linux_clone_stack = alloca(uwsgi.page_size);
diff --git a/uwsgiconfig.py b/uwsgiconfig.py
index 7940a803..fdeebb48 100644
--- a/uwsgiconfig.py
+++ b/uwsgiconfig.py
@@ -260,6 +260,8 @@ class uConf(object):
 
 	if timer_mode == 'timerfd':
             self.cflags.append('-DUWSGI_EVENT_TIMER_USE_TIMERFD')
+	    if not os.path.exists('/usr/include/sys/timerfd.h') and not os.path.exists('/usr/local/include/sys/timerfd.h'):
+            	self.cflags.append('-DUWSGI_EVENT_TIMER_USE_TIMERFD_NOINC')
 	elif timer_mode == 'kqueue':
             self.cflags.append('-DUWSGI_EVENT_TIMER_USE_KQUEUE')
 	else: