diff --git a/build/archlinux/mk b/build/archlinux/mk
index 2c5f303..a96d4c7 100755
--- a/build/archlinux/mk
+++ b/build/archlinux/mk
@@ -17,8 +17,8 @@ TMP=$(mktemp -d)
 trap 'rm -rf $TMP' EXIT
 
 SOURCE_TARBALL=$TMP/src.zip
-SOURCE_TARBALL_SHA256=$(sha256sum "$SOURCE_TARBALL" | cut -f1 -d' ')
 wget --progress=dot --output-document="$SOURCE_TARBALL" "$BUILD_SOURCE_TARBALL_URL"
+SOURCE_TARBALL_SHA256=$(sha256sum "$SOURCE_TARBALL" | cut -f1 -d' ')
 
 VARS=(BUILD_PROJECT BUILD_VERSION)
 VARS+=(BUILD_GIT_REPO BUILD_GIT_REF BUILD_REPO_URL BUILD_GIT_DIRTY)