diff --git a/apt/private/deb_import.bzl b/apt/private/deb_import.bzl
index 864d887..a218af4 100644
--- a/apt/private/deb_import.bzl
+++ b/apt/private/deb_import.bzl
@@ -27,7 +27,7 @@ genrule(
     # Bazel needs the output filename to be fixed in advanced so we settle for
     # gzip compression.
 
-    data_file="$$(basename $<)"
+    data_file="$<"
 
     if [[ "$$data_file" == "data.tar.bz2" ]]; then
       # TODO: support bz2