diff --git a/coreapi/linphonecore.c b/coreapi/linphonecore.c
index 6886d4201..0161198e9 100644
--- a/coreapi/linphonecore.c
+++ b/coreapi/linphonecore.c
@@ -2148,11 +2148,15 @@ void linphone_core_enable_lime(LinphoneCore *lc, LinphoneLimeState val){
 	
 	if (val != LinphoneLimeDisabled) {
 		linphone_im_encryption_engine_cbs_set_process_outgoing_message(cbs, lime_im_encryption_engine_process_outgoing_message_cb);
-		linphone_im_encryption_engine_cbs_set_process_downloading_file(cbs, lime_im_encryption_engine_process_downloading_file_cb);
 		linphone_im_encryption_engine_cbs_set_process_uploading_file(cbs, lime_im_encryption_engine_process_uploading_file_cb);
 		linphone_im_encryption_engine_cbs_set_is_encryption_enabled_for_file_transfer(cbs, lime_im_encryption_engine_is_file_encryption_enabled_cb);
 		linphone_im_encryption_engine_cbs_set_generate_file_transfer_key(cbs, lime_im_encryption_engine_generate_file_transfer_key_cb);
-	} 
+	} else {
+		linphone_im_encryption_engine_cbs_set_process_outgoing_message(cbs, NULL);
+		linphone_im_encryption_engine_cbs_set_process_uploading_file(cbs, NULL);
+		linphone_im_encryption_engine_cbs_set_is_encryption_enabled_for_file_transfer(cbs, NULL);
+		linphone_im_encryption_engine_cbs_set_generate_file_transfer_key(cbs, NULL);
+	}
 
 	linphone_core_set_im_encryption_engine(lc, imee);
 	linphone_im_encryption_engine_unref(imee);