diff --git a/GNUmakefile b/GNUmakefile
index 896b32b..344a6b8 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -5,7 +5,7 @@ else
 include /ioc/tools/driver.makefile
 EXCLUDE_VERSIONS = 3.13.2
 PROJECT=stream
-BUILDCLASSES += Linux
+BUILDCLASSES += vxWorks Linux WIN32
 
 DOCUDIR = docs