diff --git a/src/ifcblenderexport/Makefile b/src/ifcblenderexport/Makefile
index 4c71177426..03351fb8af 100644
--- a/src/ifcblenderexport/Makefile
+++ b/src/ifcblenderexport/Makefile
@@ -9,7 +9,7 @@ endif
 	cd dist && unzip ifcblender*
 	cp -r io_export_ifc dist/
 	cp -r dist/io_import_scene_ifc/ifcopenshell dist/io_export_ifc/
-	cd dist && zip -r blender28-bim-$(date '+%y%m%d')-$(PLATFORM).zip io_export_ifc io_import_scene_ifc
+	cd dist && zip -r blender28-bim-`date '+%y%m%d'`-$(PLATFORM).zip io_export_ifc io_import_scene_ifc
 	cd dist && rm -rf io_* && rm ifcblender-python-37-v0.6.0-b4ce5be-$(PLATFORM)64.zip
 
 .PHONY: clean