diff --git a/whisper.h b/whisper.h
index 89172e70..e7c1a125 100644
--- a/whisper.h
+++ b/whisper.h
@@ -67,6 +67,7 @@ extern "C" {
 
     struct whisper_context;
     struct whisper_state;
+    struct whisper_full_params;
 
     typedef int whisper_token;