diff --git a/build_tools/make_tarball.sh b/build_tools/make_tarball.sh
index aeb805c38..7c1609be5 100755
--- a/build_tools/make_tarball.sh
+++ b/build_tools/make_tarball.sh
@@ -70,7 +70,7 @@ $TAR_APPEND version
 
 if [ -n "$VENDOR_TARBALLS" ]; then
   $BUILD_TOOL corrosion-vendor.tar.gz
-  mv corrosion-vendor.tar.gz ${FISH_ARTEFACT_PATH:-~/fish_built}/${prefix}_corrosion-vendor.tar.gz
+  mv corrosion-vendor.tar.gz "${FISH_ARTEFACT_PATH:-~/fish_built}"/"${prefix}"_corrosion-vendor.tar.gz
 fi
 
 cd -