diff --git a/package/pkg-utils.mk b/package/pkg-utils.mk
index c7597a3a45..11090cb628 100644
--- a/package/pkg-utils.mk
+++ b/package/pkg-utils.mk
@@ -43,7 +43,7 @@ pkgname = $(lastword $(subst /, ,$(pkgdir)))
 # Helper to build the extension for a package archive, based on various
 # conditions.
 # $(1): upper-case package name
-pkg_source_ext = .tar.gz
+pkg_source_ext = $(BR_FMT_VERSION_$($(1)_SITE_METHOD)).tar.gz
 
 # Define extractors for different archive suffixes
 INFLATE.bz2  = $(BZCAT)