diff --git a/config.json b/config.json
index 900b327..1829efd 100644
--- a/config.json
+++ b/config.json
@@ -42,6 +42,7 @@
   "output_attentions": false,
   "output_hidden_states": false,
   "output_past": false,
+  "prefix": " ",
   "pruned_heads": {},
   "repetition_penalty": 1.0,
   "temperature": 1.0,
@@ -50,4 +51,4 @@
   "torchscript": false,
   "use_bfloat16": false,
   "vocab_size": 50265
-}
+}
\ No newline at end of file