diff --git a/src/makeBaseExt/top/configure/CONFIG b/src/makeBaseExt/top/configure/CONFIG
index 49ac5ecc3..8114509fb 100644
--- a/src/makeBaseExt/top/configure/CONFIG
+++ b/src/makeBaseExt/top/configure/CONFIG
@@ -4,8 +4,10 @@ INSTALL_IDLFILE = $(INSTALL)
 
 include $(TOP)/configure/RELEASE
 -include $(TOP)/configure/RELEASE.$(EPICS_HOST_ARCH)
+ifdef T_A
 -include $(TOP)/configure/RELEASE.Common.$(T_A)
 -include $(TOP)/configure/RELEASE.$(EPICS_HOST_ARCH).$(T_A)
+endif
 
 CONFIG=$(EPICS_BASE)/configure
 include $(CONFIG)/CONFIG