diff --git a/guix/build/download.scm b/guix/build/download.scm
index 6563341b9f..67a8952599 100644
--- a/guix/build/download.scm
+++ b/guix/build/download.scm
@@ -142,9 +142,8 @@ Otherwise return STORE-PATH."
 
 (cond-expand
   (guile-2.2
-   ;; Guile 2.2.0 to 2.2.2 included has a bug whereby 'time-monotonic' objects
-   ;; have seconds and nanoseconds swapped (fixed in Guile commit 886ac3e).
-   ;; Work around it.
+   ;; Guile 2.2.2 has a bug whereby 'time-monotonic' objects have seconds and
+   ;; nanoseconds swapped (fixed in Guile commit 886ac3e).  Work around it.
    (define time-monotonic time-tai))
   (else #t))
 
diff --git a/guix/cache.scm b/guix/cache.scm
index 077b0780bd..1dc0083f1d 100644
--- a/guix/cache.scm
+++ b/guix/cache.scm
@@ -33,6 +33,13 @@
 ;;;
 ;;; Code:
 
+(cond-expand
+  (guile-2.2
+   ;; Guile 2.2.2 has a bug whereby 'time-monotonic' objects have seconds and
+   ;; nanoseconds swapped (fixed in Guile commit 886ac3e).  Work around it.
+   (define time-monotonic time-tai))
+  (else #t))
+
 (define (obsolete? date now ttl)
   "Return #t if DATE is obsolete compared to NOW + TTL seconds."
   (time>? (subtract-duration now (make-time time-duration 0 ttl))
diff --git a/tests/cache.scm b/tests/cache.scm
index 0e1e08b693..e46cdd816d 100644
--- a/tests/cache.scm
+++ b/tests/cache.scm
@@ -24,6 +24,13 @@
   #:use-module ((guix utils) #:select (call-with-temporary-directory))
   #:use-module (ice-9 match))
 
+(cond-expand
+  (guile-2.2
+   ;; Guile 2.2.2 has a bug whereby 'time-monotonic' objects have seconds and
+   ;; nanoseconds swapped (fixed in Guile commit 886ac3e).  Work around it.
+   (define time-monotonic time-tai))
+  (else #t))
+
 (test-begin "cache")
 
 (test-equal "remove-expired-cache-entries"