diff --git a/tools/cws2fws.c b/tools/cws2fws.c
index 68f7953b56..74588c10a6 100644
--- a/tools/cws2fws.c
+++ b/tools/cws2fws.c
@@ -6,11 +6,17 @@
  * This utility converts compressed Macromedia Flash files to uncompressed ones.
  */
 
+#include "config.h"
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
+#if HAVE_UNISTD_H
 #include <unistd.h>
+#endif
+#if HAVE_IO_H
+#include <io.h>
+#endif
 #include <zlib.h>
 
 #ifdef DEBUG
diff --git a/tools/pktdumper.c b/tools/pktdumper.c
index d23cd9674f..9243c93373 100644
--- a/tools/pktdumper.c
+++ b/tools/pktdumper.c
@@ -18,12 +18,18 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "config.h"
 #include <limits.h>
 #include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#if HAVE_UNISTD_H
 #include <unistd.h>
+#endif
+#if HAVE_IO_H
+#include <io.h>
+#endif
 
 #include "libavutil/time.h"
 #include "libavformat/avformat.h"