diff --git a/char32.c b/char32.c
index 3d6c2c78..be5bf229 100644
--- a/char32.c
+++ b/char32.c
@@ -34,7 +34,7 @@ _Static_assert(
 #if !defined(__STDC_UTF_32__) || !__STDC_UTF_32__
  #error "char32_t does not use UTF-32"
 #endif
-#if (!defined(__STDC_ISO_10646__) || !__STDC_ISO_10646__) && !defined(__FreeBSD__)
+#if (!defined(__STDC_ISO_10646__) || !__STDC_ISO_10646__) && !defined(__FreeBSD__) && !defined(__OpenBSD__)
  #error "wchar_t does not use UTF-32"
 #endif