diff --git a/sys/v4l2/gstv4l2src.c b/sys/v4l2/gstv4l2src.c
index f28c59a67c..7825956be5 100644
--- a/sys/v4l2/gstv4l2src.c
+++ b/sys/v4l2/gstv4l2src.c
@@ -17,6 +17,10 @@
  * Boston, MA 02111-1307, USA.
  */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include <string.h>
 #include <sys/time.h>
 #include "v4l2src_calls.h"
diff --git a/sys/v4l2/v4l2_calls.c b/sys/v4l2/v4l2_calls.c
index 6f01328f97..2ec66510c3 100644
--- a/sys/v4l2/v4l2_calls.c
+++ b/sys/v4l2/v4l2_calls.c
@@ -28,6 +28,7 @@
 #include <sys/mman.h>
 #include <string.h>
 #include <errno.h>
+#include <unistd.h>
 #include "v4l2_calls.h"
 
 #define DEBUG(format, args...) \