diff --git a/gnu/packages/java.scm b/gnu/packages/java.scm
index 9c46551202..7ba8b46226 100644
--- a/gnu/packages/java.scm
+++ b/gnu/packages/java.scm
@@ -13342,6 +13342,7 @@ (define-public java-args4j
               (uri (git-reference
                     (url "https://github.com/kohsuke/args4j")
                     (commit (string-append "args4j-site-" version))))
+              (file-name (git-file-name name version))
               (sha256
                (base32
                 "0w061fg65qrsm1a0lz0vyprsyidj31krjb459qi2lw0y78xza26s"))))