diff --git a/dlls/dinput/effect_linuxinput.c b/dlls/dinput/effect_linuxinput.c
index 68fda2b3881..e0e5986dd75 100644
--- a/dlls/dinput/effect_linuxinput.c
+++ b/dlls/dinput/effect_linuxinput.c
@@ -29,7 +29,9 @@
 #  include <linux/input.h>
 #endif
 #include <errno.h>
-#include <unistd.h>
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>
+#endif
 #include <math.h>
 #include "wine/debug.h"
 #include "wine/unicode.h"