diff --git a/testing/get-swift.sh b/testing/get-swift.sh
index e4380a35..4b04c66d 100755
--- a/testing/get-swift.sh
+++ b/testing/get-swift.sh
@@ -4,13 +4,18 @@ set -ex
 
 . /etc/lsb-release
 if [ "$DISTRIB_CODENAME" = "trusty" ]; then
-    SWIFT_URL='https://swift.org/builds/swift-4.0.3-release/ubuntu1404/swift-4.0.3-RELEASE/swift-4.0.3-RELEASE-ubuntu14.04.tar.gz'
+    SWIFT_TARBALL="swift-4.0.3-RELEASE-ubuntu14.04.tar.gz"
+    SWIFT_URL="https://swift.org/builds/swift-4.0.3-release/ubuntu1404/swift-4.0.3-RELEASE/$SWIFT_TARBALL"
 else
-    SWIFT_URL='https://swift.org/builds/swift-4.0.3-release/ubuntu1604/swift-4.0.3-RELEASE/swift-4.0.3-RELEASE-ubuntu16.04.tar.gz'
+    SWIFT_TARBALL="swift-4.0.3-RELEASE-ubuntu16.04.tar.gz"
+    SWIFT_URL="https://swift.org/builds/swift-4.0.3-release/ubuntu1604/swift-4.0.3-RELEASE/$SWIFT_TARBALL"
 fi
 
+pushd "$HOME"/.swift
+    wget -N -c "$SWIFT_URL"
+popd
+
 mkdir -p /tmp/swift
 pushd /tmp/swift
-    wget -N -c "$SWIFT_URL" -O "$HOME"/.swift/swift.tar.gz
-    tar -xf "$HOME"/.swift/swift.tar.gz --strip 1
+    tar -xf "$HOME"/.swift/"$SWIFT_TARBALL" --strip 1
 popd