diff --git a/e_os2.h b/e_os2.h
index 8db74f8..45551d1 100644
--- a/e_os2.h
+++ b/e_os2.h
@@ -170,6 +170,10 @@
 # ifdef OPENSSL_SYSNAME_MACOSX
 #  define OPENSSL_SYS_MACOSX
 # endif
+# ifdef OPENSSL_SYSNAME_MACOSX_RHAPSODY
+#  define OPENSSL_SYS_MACOSX_RHAPSODY
+#  define OPENSSL_SYS_MACOSX
+# endif
 # if defined(_CRAY) || defined(OPENSSL_SYSNAME_CRAY)
 #  define OPENSSL_SYS_CRAY
 # endif