diff --git a/src/ssb.js.c b/src/ssb.js.c
index e4565a8b..c21234b1 100644
--- a/src/ssb.js.c
+++ b/src/ssb.js.c
@@ -1476,7 +1476,7 @@ void tf_ssb_register(JSContext* context, tf_ssb_t* ssb)
 	JS_SetPropertyStr(context, object, "createTunnel", JS_NewCFunction(context, _tf_ssb_createTunnel, "createTunnel", 3));
 	/* Write. */
 	JS_SetPropertyStr(context, object, "storeMessage", JS_NewCFunction(context, _tf_ssb_storeMessage, "storeMessage", 1));
-	JS_SetPropertyStr(context, object, "blobStore", JS_NewCFunction(context, _tf_ssb_blobStore, "blobStore", 2));
+	JS_SetPropertyStr(context, object, "blobStore", JS_NewCFunction(context, _tf_ssb_blobStore, "blobStore", 1));
 
 	/* Should be trusted only. */
 	JS_SetPropertyStr(context, object, "addEventListener", JS_NewCFunction(context, _tf_ssb_add_event_listener, "addEventListener", 2));