diff --git a/didactic/config/experiment/cardinal/multimodal-xformer.yaml b/didactic/config/experiment/cardinal/multimodal-xformer.yaml
index 060ecbed..eed606e2 100644
--- a/didactic/config/experiment/cardinal/multimodal-xformer.yaml
+++ b/didactic/config/experiment/cardinal/multimodal-xformer.yaml
@@ -2,7 +2,7 @@
 
 defaults:
   - /task/data: all
-  - /task/img_tokenizer/model: null
+  - /task/img_tokenizer/model: time-series-transformer
   - /task/model/encoder: ???
   - /task/model/contrastive_head: mlp
   - /task/model/prediction_head: ft-prediction