diff --git a/Makefile.common b/Makefile.common
index 467f7af..5c004bc 100644
--- a/Makefile.common
+++ b/Makefile.common
@@ -88,7 +88,10 @@ RPM_BUILD_DIR ?= $(BUILDDIR)/$(NAME)-$(VERSION)
 
 #needed for archivefile rule
 TREEPATH := $(NAME)-$(VERSION)
+TREEPATH := $(NAME)-$(VERSION)
 EXT := $(shell cat $(NAME).spec | grep Source | sed 's/Source: //' | sed -E 's/^([^.]*\.)(.*)$/\2//')
+ARCHIVEFILE := $(shell cat $(NAME).spec | grep Source | sed -r 's/^Source[0..9]*:\s*//' | xargs basename)
+ARCHIVEFILE := $(shell rpm --queryformat '$(ARCHIVEFILE)\n' --specfile $(NAME).spec | head -n 1)
 TEMPDIR := $(shell mktemp -d)