diff --git a/gnu/packages/maths.scm b/gnu/packages/maths.scm
index 45d699e39c0e9e6b28b686b66f30d4e35e669356..0688650738a3e4b0e6d50f4964447e9f451b5dd8 100644
--- a/gnu/packages/maths.scm
+++ b/gnu/packages/maths.scm
@@ -4052,6 +4052,7 @@ (define-public xaos
               (uri (git-reference
                     (url "https://github.com/xaos-project/XaoS")
                     (commit (string-append "release-" version))))
+              (file-name (git-file-name name version))
               (sha256
                (base32
                 "00110p5xscjsmn7avfqgydn656zbmdj3l3y2fpv9b4ihzpid8n7a"))))