diff --git a/app/flatpak-builtins-build-update-repo.c b/app/flatpak-builtins-build-update-repo.c
index 8c54d8ed..783cae26 100644
--- a/app/flatpak-builtins-build-update-repo.c
+++ b/app/flatpak-builtins-build-update-repo.c
@@ -656,14 +656,18 @@ flatpak_builtin_build_update_repo (int argc, char **argv,
                               cancellable, error))
         return FALSE;
 
-      formatted_freed_size = g_format_size_full (objsize_total, 0);
 
-      g_print (_("Total objects: %u\n"), n_objects_total);
-      if (n_objects_pruned == 0)
-        g_print (_("No unreachable objects\n"));
-      else
-        g_print (_("Deleted %u objects, %s freed\n"),
-                 n_objects_pruned, formatted_freed_size);
+      if (!opt_prune_dry_run)
+        {
+          formatted_freed_size = g_format_size_full (objsize_total, 0);
+
+          g_print (_("Total objects: %u\n"), n_objects_total);
+          if (n_objects_pruned == 0)
+            g_print (_("No unreachable objects\n"));
+          else
+            g_print (_("Deleted %u objects, %s freed\n"),
+                    n_objects_pruned, formatted_freed_size);
+      }
     }
 
   return TRUE;
diff --git a/common/flatpak-prune.c b/common/flatpak-prune.c
index 8fb6fd90..2fee8988 100644
--- a/common/flatpak-prune.c
+++ b/common/flatpak-prune.c
@@ -800,14 +800,17 @@ flatpak_repo_prune (OstreeRepo    *repo,
     g_timer_stop (timer);
     g_info ("Elapsed time: %.1f sec",  g_timer_elapsed (timer, NULL));
 
-    g_info ("Pruning unreachable objects");
-    g_timer_start (timer);
+    if (!dry_run)
+      {
+        g_info ("Pruning unreachable objects");
+        g_timer_start (timer);
 
-    if (!prune_unreachable_loose_objects (repo, &data, cancellable, error))
-      return FALSE;
+        if (!prune_unreachable_loose_objects (repo, &data, cancellable, error))
+          return FALSE;
 
-    g_timer_stop (timer);
-    g_info ("Elapsed time: %.1f sec",  g_timer_elapsed (timer, NULL));
+        g_timer_stop (timer);
+        g_info ("Elapsed time: %.1f sec",  g_timer_elapsed (timer, NULL));
+      }
   }
 
   /* Prune static deltas outside lock to avoid conflict with its exclusive lock */