diff --git a/tools/testing/selftests/damon/debugfs_attrs.sh b/tools/testing/selftests/damon/debugfs_attrs.sh
index 8e33a7b584e7..466dbeb37e31 100644
--- a/tools/testing/selftests/damon/debugfs_attrs.sh
+++ b/tools/testing/selftests/damon/debugfs_attrs.sh
@@ -63,10 +63,10 @@ echo "$orig_content" > "$file"
 file="$DBGFS/schemes"
 orig_content=$(cat "$file")
 
-test_write_succ "$file" "1 2 3 4 5 6 4 0 0 0" \
+test_write_succ "$file" "1 2 3 4 5 6 4 0 0 0 1 2 3" \
 	"$orig_content" "valid input"
 test_write_fail "$file" "1 2
-3 4 5 6 3 0 0 0" "$orig_content" "multi lines"
+3 4 5 6 3 0 0 0 1 2 3" "$orig_content" "multi lines"
 test_write_succ "$file" "" "$orig_content" "disabling"
 echo "$orig_content" > "$file"