diff --git a/src/c/file.d b/src/c/file.d
index 946c00915..47ad0b732 100644
--- a/src/c/file.d
+++ b/src/c/file.d
@@ -27,6 +27,9 @@
 
 #ifdef HAVE_SELECT
 #include <sys/select.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <unistd.h>
 #elif defined(BSD) && !defined(MSDOS)
 #include <sys/ioctl.h>
 #endif