diff --git a/convert.py b/convert.py
index e38ee5315af30e..980e6fc720aa63 100755
--- a/convert.py
+++ b/convert.py
@@ -348,7 +348,7 @@ def load_torch_params(model: LazyModel, config_path: Path) -> "Params":
             f_rope_freq_base = 1e6
 
         return Params(
-            n_vocab=config.get("vocab_size", model["tok_embeddings.weight"].shape[0]),
+            n_vocab=model["tok_embeddings.weight"].shape[0],
             n_embd=config["dim"],
             n_layer=config["n_layers"],
             n_ctx=n_ctx,