diff --git a/gst/quicktime/gstqtmux.c b/gst/quicktime/gstqtmux.c
index 430e979fa1..4b4344b016 100644
--- a/gst/quicktime/gstqtmux.c
+++ b/gst/quicktime/gstqtmux.c
@@ -75,6 +75,7 @@
 #include <gst/gst.h>
 #include <gst/base/gstcollectpads.h>
 
+#include <sys/types.h>
 #ifdef G_OS_WIN32
 #include <io.h>                 /* lseek, open, close, read */
 #undef lseek
@@ -83,6 +84,10 @@
 #define off_t guint64
 #endif
 
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>
+#endif
+
 #include "gstqtmux.h"
 
 GST_DEBUG_CATEGORY_STATIC (gst_qt_mux_debug);