1 files changed, 5 insertions, 0 deletions
diff --git a/e_os2.h b/e_os2.h
index ecfc6c5d4e..04d00ec78d 100644
--- a/e_os2.h
+++ b/e_os2.h
@@ -195,6 +195,11 @@ extern "C" {
 # endif
 #endif
 
+/* --------------------------------- VOS ----------------------------------- */
+#ifdef OPENSSL_SYSNAME_VOS
+# define OPENSSL_SYS_VOS
+#endif
+
 /* ------------------------------- VxWorks --------------------------------- */
 #ifdef OPENSSL_SYSNAME_VXWORKS
 # define OPENSSL_SYS_VXWORKS