diff --git a/tools/dbus-run-session.c b/tools/dbus-run-session.c
index 57daa977..face95a1 100644
--- a/tools/dbus-run-session.c
+++ b/tools/dbus-run-session.c
@@ -31,7 +31,9 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#ifndef _MSC_VER
 #include <unistd.h>
+#endif
 
 #include <sys/types.h>
 #ifdef DBUS_UNIX