diff --git a/generic/file/src/filesink/imp.rs b/generic/file/src/filesink/imp.rs
index 2628c3be..2981d1ab 100644
--- a/generic/file/src/filesink/imp.rs
+++ b/generic/file/src/filesink/imp.rs
@@ -13,6 +13,7 @@
 use gst::glib;
 use gst::prelude::*;
 use gst::subclass::prelude::*;
+use gst_base::prelude::*;
 use gst_base::subclass::prelude::*;
 
 use std::fs::File;
@@ -111,6 +112,12 @@ impl ObjectSubclass for FileSink {
 }
 
 impl ObjectImpl for FileSink {
+    fn constructed(&self) {
+        self.parent_constructed();
+
+        self.obj().set_sync(false);
+    }
+
     fn properties() -> &'static [glib::ParamSpec] {
         static PROPERTIES: Lazy<Vec<glib::ParamSpec>> = Lazy::new(|| {
             vec![glib::ParamSpecString::builder("location")
diff --git a/net/aws/src/s3sink/imp.rs b/net/aws/src/s3sink/imp.rs
index 02fd22d1..603823a5 100644
--- a/net/aws/src/s3sink/imp.rs
+++ b/net/aws/src/s3sink/imp.rs
@@ -9,6 +9,7 @@
 use gst::glib;
 use gst::prelude::*;
 use gst::subclass::prelude::*;
+use gst_base::prelude::*;
 use gst_base::subclass::prelude::*;
 
 use aws_sdk_s3::{
@@ -655,6 +656,12 @@ impl ObjectSubclass for S3Sink {
 }
 
 impl ObjectImpl for S3Sink {
+    fn constructed(&self) {
+        self.parent_constructed();
+
+        self.obj().set_sync(false);
+    }
+
     fn properties() -> &'static [glib::ParamSpec] {
         static PROPERTIES: Lazy<Vec<glib::ParamSpec>> = Lazy::new(|| {
             vec![