diff --git a/src/ifcblenderexport/Makefile b/src/ifcblenderexport/Makefile
index db64b20938..544485ac4d 100644
--- a/src/ifcblenderexport/Makefile
+++ b/src/ifcblenderexport/Makefile
@@ -1,3 +1,5 @@
+VERSION:=`date '+%y%m%d'`
+
 .PHONY: dist
 dist:
 ifndef PLATFORM
@@ -10,8 +12,8 @@ endif
 	cp -r blenderbim dist/
 	cp -r dist/io_import_scene_ifc/ifcopenshell dist/blenderbim/
 	rm -rf dist/io_import_scene_ifc
-	cd dist/blenderbim && export VERSION=`date '+%y%m%d'` && sed -i "s/999999/$(VERSION)/" __init__.py
-	cd dist && zip -r blender28-bim-`date '+%y%m%d'`-$(PLATFORM).zip blenderbim
+	cd dist/blenderbim && sed -i "s/999999/$(VERSION)/" __init__.py
+	cd dist && zip -r blender28-bim-$(VERSION)-$(PLATFORM).zip blenderbim
 	cd dist && rm -rf io_* && rm -rf blenderbim && rm ifcblender-python-37-v0.6.0-b4ce5be-$(PLATFORM)64.zip
 
 .PHONY: clean