diff --git a/src/device.c b/src/device.c
index a262728..fca871d 100644
--- a/src/device.c
+++ b/src/device.c
@@ -27,12 +27,12 @@
 #include <unistd.h>
 #include <fcntl.h>
 
-#include <sys/types.h>
 #include <sys/mman.h>
 #include <linux/videodev2.h>
 
 #include "tools.h"
 #include "logging.h"
+#include "xioctl.h"
 #include "device.h"
 
 
diff --git a/src/encoder.c b/src/encoder.c
index ae49e5b..f90f0bd 100644
--- a/src/encoder.c
+++ b/src/encoder.c
@@ -23,6 +23,7 @@
 #include <assert.h>
 
 #include "tools.h"
+#include "logging.h"
 #include "device.h"
 #include "encoder.h"
 
diff --git a/src/main.c b/src/main.c
index 6e6fdcb..251acbb 100644
--- a/src/main.c
+++ b/src/main.c
@@ -26,7 +26,6 @@
 
 #include <stdio.h>
 #include <stdlib.h>
-#include <unistd.h>
 #include <signal.h>
 #include <getopt.h>
 
diff --git a/src/omx/component.c b/src/omx/component.c
index ea7db98..9317d7c 100644
--- a/src/omx/component.c
+++ b/src/omx/component.c
@@ -19,8 +19,6 @@
 *****************************************************************************/
 
 
-#include <unistd.h>
-
 #include <IL/OMX_Core.h>
 #include <IL/OMX_Component.h>
 
diff --git a/src/omx/formatters.h b/src/omx/formatters.h
index 66313a4..e015103 100644
--- a/src/omx/formatters.h
+++ b/src/omx/formatters.h
@@ -22,9 +22,7 @@
 #pragma once
 
 #include <stdio.h>
-#include <unistd.h>
 
-#include <sys/types.h>
 #include <sys/syscall.h>
 
 #include <IL/OMX_IVCommon.h>
diff --git a/src/stream.c b/src/stream.c
index f4a11a7..f127633 100644
--- a/src/stream.c
+++ b/src/stream.c
@@ -19,7 +19,6 @@
 *****************************************************************************/
 
 
-#include <unistd.h>
 #include <errno.h>
 #include <time.h>
 #include <assert.h>
@@ -31,6 +30,7 @@
 
 #include "tools.h"
 #include "logging.h"
+#include "xioctl.h"
 #include "device.h"
 #include "encoder.h"
 #include "stream.h"
diff --git a/src/tools.h b/src/tools.h
index 62eef8d..ed2107c 100644
--- a/src/tools.h
+++ b/src/tools.h
@@ -23,7 +23,6 @@
 
 #include <stdio.h>
 #include <stdlib.h>
-#include <unistd.h>
 #include <errno.h>
 #include <math.h>
 #include <pthread.h>
@@ -31,11 +30,8 @@
 #include <assert.h>
 
 #include <sys/ioctl.h>
-#include <sys/types.h>
 #include <sys/syscall.h>
 
-#include "logging.h"
-
 
 #define A_PTHREAD_CREATE(_tid, _func, _arg)	assert(!pthread_create(_tid, NULL, _func, _arg))
 #define A_PTHREAD_JOIN(_tid)				assert(!pthread_join(_tid, NULL))
@@ -61,9 +57,6 @@
 #define UNUSED __attribute__((unused))
 
 
-#define XIOCTL_RETRIES 4
-
-
 INLINE unsigned max_u(unsigned a, unsigned b) {
 	return (a > b ? a : b);
 }
@@ -88,25 +81,3 @@ INLINE long double now_ms_ld(void) {
 	now_ms(&sec, &msec);
 	return (long double)sec + ((long double)msec) / 1000;
 }
-
-INLINE int xioctl(const int fd, const int request, void *arg) {
-	int retries = XIOCTL_RETRIES;
-	int retval = -1;
-
-	do {
-		retval = ioctl(fd, request, arg);
-	} while (
-		retval
-		&& retries--
-		&& (
-			errno == EINTR
-			|| errno == EAGAIN
-			|| errno == ETIMEDOUT
-		)
-	);
-
-	if (retval && retries <= 0) {
-		LOG_PERROR("ioctl(%d) retried %d times; giving up", request, XIOCTL_RETRIES);
-	}
-	return retval;
-}
diff --git a/src/xioctl.h b/src/xioctl.h
new file mode 100644
index 0000000..6a978d6
--- /dev/null
+++ b/src/xioctl.h
@@ -0,0 +1,55 @@
+/*****************************************************************************
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#include <errno.h>
+
+#include <sys/ioctl.h>
+
+#include "tools.h"
+#include "logging.h"
+
+
+#define XIOCTL_RETRIES 4
+
+
+INLINE int xioctl(const int fd, const int request, void *arg) {
+	int retries = XIOCTL_RETRIES;
+	int retval = -1;
+
+	do {
+		retval = ioctl(fd, request, arg);
+	} while (
+		retval
+		&& retries--
+		&& (
+			errno == EINTR
+			|| errno == EAGAIN
+			|| errno == ETIMEDOUT
+		)
+	);
+
+	if (retval && retries <= 0) {
+		LOG_PERROR("ioctl(%d) retried %d times; giving up", request, XIOCTL_RETRIES);
+	}
+	return retval;
+}