diff --git a/configure/E3/CONFIG_EXPORT b/configure/E3/CONFIG_EXPORT
index f052cad289d96e7db793d259276e2a4489799d6f..4b7401156c7ed414e6d965a7b16d9c82631d4aba 100644
--- a/configure/E3/CONFIG_EXPORT
+++ b/configure/E3/CONFIG_EXPORT
@@ -1,9 +1,11 @@
 # Variables should be transferred to module_name.makefile
 
 EPICS_HOST_ARCH:=$(shell $(EPICS_BASE)/startup/EpicsHostArch.pl)
+MSI:=$(EPICS_BASE)/bin/$(EPICS_HOST_ARCH)/msi
 
 EXPORT_VARS+=EPICS_HOST_ARCH
 EXPORT_VARS+=EPICS_BASE
+EXPORT_VARS+=MSI
 EXPORT_VARS+=E3_REQUIRE_TOOLS
 EXPORT_VARS+=E3_MODULE_VERSION
 EXPORT_VARS+=E3_SITEMODS_PATH