diff --git a/configure/os/CONFIG_COMPAT b/configure/os/CONFIG_COMPAT
index ce4368e8a..0bf54ba7c 100644
--- a/configure/os/CONFIG_COMPAT
+++ b/configure/os/CONFIG_COMPAT
@@ -12,6 +12,7 @@ ARCH_Linux = linux-x86
 ARCH_WIN32 = win32-x86
 ARCH_hp700 = hpux-m68k
 ARCH_alpha = osf-alpha
+ARCH_cygwin32 = cygwin-x86
 
 ifndef EPICS_HOST_ARCH
 ifdef HOST_ARCH