diff --git a/src/mad/utils/tty_expect.c b/src/mad/utils/tty_expect.c
index 81ad4928f9..6085279d77 100644
--- a/src/mad/utils/tty_expect.c
+++ b/src/mad/utils/tty_expect.c
@@ -14,7 +14,11 @@
 /* limitations under the License.                                             */
 /* -------------------------------------------------------------------------- */
 
+#ifdef __APPLE__
+#include <util.h>
+#else
 #include <pty.h>
+#endif
 
 #include <stdio.h>
 #include <stdlib.h>