diff --git a/lib/krb5/krb5_locl.h b/lib/krb5/krb5_locl.h
index 1c8101663..99c91ddac 100644
--- a/lib/krb5/krb5_locl.h
+++ b/lib/krb5/krb5_locl.h
@@ -87,6 +87,9 @@
 #ifdef HAVE_NETDB_H
 #include <netdb.h>
 #endif
+#ifdef HAVE_SYS_UIO_H
+#include <sys/uio.h>
+#endif
 #ifdef HAVE_SYS_FILIO_H
 #include <sys/filio.h>
 #endif