diff --git a/tools/winedump/debug.c b/tools/winedump/debug.c
index ab7bc947441..1f1ddfd6548 100644
--- a/tools/winedump/debug.c
+++ b/tools/winedump/debug.c
@@ -20,13 +20,18 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include "config.h"
+#include "wine/port.h"
+
 #include <stdlib.h>
 #include <stdio.h>
 #include <unistd.h>
 #include <time.h>
 #include <sys/types.h>
 #include <sys/stat.h>
+#ifdef HAVE_SYS_MMAN_H
 #include <sys/mman.h>
+#endif
 #include <fcntl.h>
 
 #include "winnt.h"
diff --git a/tools/winedump/pe.c b/tools/winedump/pe.c
index 384ffaba10f..6ad41e4dfd2 100644
--- a/tools/winedump/pe.c
+++ b/tools/winedump/pe.c
@@ -27,7 +27,9 @@
 #include <time.h>
 #include <sys/types.h>
 #include <sys/stat.h>
+#ifdef HAVE_SYS_MMAN_H
 #include <sys/mman.h>
+#endif
 #include <fcntl.h>
 
 #include "winnt.h"