diff --git a/book/chapters/appendices/solutions.qmd b/book/chapters/appendices/solutions.qmd
index c2067c570..a7c212f1e 100644
--- a/book/chapters/appendices/solutions.qmd
+++ b/book/chapters/appendices/solutions.qmd
@@ -1025,14 +1025,14 @@ set.seed(1)
 
 afs_sfs = auto_fselector(
   fselector = fs("sequential", strategy = "sfs"),
-  learner = lrn("classif.rpart"),
+  learner = lrn("classif.rpart", id = "classif.rpart.sfs"),
   resampling = rsmp("holdout"),
   measure = msr("classif.acc")
 )
 
 afs_sbs = auto_fselector(
   fselector = fs("sequential", strategy = "sbs"),
-  learner = lrn("classif.rpart"),
+  learner = lrn("classif.rpart", id = "classif.rpart.sbs"),
   resampling = rsmp("holdout"),
   measure = msr("classif.acc")
 )