diff --git a/src/api/layers/sender.layer.ts b/src/api/layers/sender.layer.ts
index a4c1363ee..6fbc6894a 100644
--- a/src/api/layers/sender.layer.ts
+++ b/src/api/layers/sender.layer.ts
@@ -234,7 +234,7 @@ export class SenderLayer extends ListenerLayer {
    * Sends image message
    * @category Chat
    * @param to Chat id
-   * @param base64 File path, http link or base64Encoded
+   * @param base64  A base64-encoded data URI (with mime type)
    * @param filename
    * @param caption
    * @param quotedMessageId Quoted message id