diff --git a/gnu/packages/virtualization.scm b/gnu/packages/virtualization.scm
index 86f4d71364..5e39fb9b9a 100644
--- a/gnu/packages/virtualization.scm
+++ b/gnu/packages/virtualization.scm
@@ -792,7 +792,9 @@ (define-public runc
     (arguments
      '(#:import-path "github.com/opencontainers/runc"
        #:install-source? #f
-       #:tests? #f                      ; FIXME: 20/139 tests fail.
+       ;; XXX: 20/139 tests fail due to missing /var, cgroups and apparmor in
+       ;; the build environment.
+       #:tests? #f
        #:phases
        (modify-phases %standard-phases
          (replace 'unpack