diff --git a/guix/profiles.scm b/guix/profiles.scm
index ac2009154f..a0a259bd4e 100644
--- a/guix/profiles.scm
+++ b/guix/profiles.scm
@@ -331,8 +331,8 @@ replace it."
        (let* ((pattern  (manifest-entry->pattern entry))
               (previous (manifest-lookup manifest pattern))
               (newer?   (and previous
-                             (version>? (manifest-entry-version entry)
-                                        (manifest-entry-version previous)))))
+                             (version>=? (manifest-entry-version entry)
+                                         (manifest-entry-version previous)))))
          (loop rest
                (if previous install (cons entry install))
                (if (and previous newer?)
diff --git a/tests/profiles.scm b/tests/profiles.scm
index c210123f74..833b08b455 100644
--- a/tests/profiles.scm
+++ b/tests/profiles.scm
@@ -169,6 +169,14 @@
       (and (null? remove) (null? install) (null? upgrade)
            (equal? (list (cons guile-2.0.9 guile-1.8.8)) downgrade)))))
 
+(test-assert "manifest-transaction-effects and pseudo-upgrades"
+  (let* ((m0 (manifest (list guile-2.0.9)))
+         (t  (manifest-transaction (install (list guile-2.0.9)))))
+    (let-values (((remove install upgrade downgrade)
+                  (manifest-transaction-effects m0 t)))
+      (and (null? remove) (null? install) (null? downgrade)
+           (equal? (list (cons guile-2.0.9 guile-2.0.9)) upgrade)))))
+
 (test-assertm "profile-derivation"
   (mlet* %store-monad
       ((entry ->   (package->manifest-entry %bootstrap-guile))