diff --git a/app/src/main/java/io/xpipe/app/browser/BrowserTransferComp.java b/app/src/main/java/io/xpipe/app/browser/BrowserTransferComp.java
index 5454ab7f..72124daa 100644
--- a/app/src/main/java/io/xpipe/app/browser/BrowserTransferComp.java
+++ b/app/src/main/java/io/xpipe/app/browser/BrowserTransferComp.java
@@ -56,11 +56,15 @@ public class BrowserTransferComp extends SimpleComp {
                             if (sourceItem.isEmpty()) {
                                 return new SimpleStringProperty("?");
                             }
-                            return Bindings.createStringBinding(() -> {
-                                var p = sourceItem.get().getProgress().getValue();
-                                var progressSuffix = p == null || sourceItem.get().downloadFinished().get() ? "" : " " + (p.getTransferred() * 100 / p.getTotal()) + "%";
-                                return entry.getFileName() + progressSuffix;
-                            }, sourceItem.get().getProgress());
+                            synchronized (sourceItem.get().getProgress()) {
+                                return Bindings.createStringBinding(() -> {
+                                    var p = sourceItem.get().getProgress().getValue();
+                                    var progressSuffix = p == null || sourceItem.get().downloadFinished().get() ?
+                                            "" :
+                                            " " + (p.getTransferred() * 100 / p.getTotal()) + "%";
+                                    return entry.getFileName() + progressSuffix;
+                                }, sourceItem.get().getProgress());
+                            }
                         })
                 .grow(false, true);
         var dragNotice = new LabelComp(AppI18n.observable("dragLocalFiles"))
diff --git a/app/src/main/java/io/xpipe/app/browser/BrowserTransferModel.java b/app/src/main/java/io/xpipe/app/browser/BrowserTransferModel.java
index 817aa105..be472c8d 100644
--- a/app/src/main/java/io/xpipe/app/browser/BrowserTransferModel.java
+++ b/app/src/main/java/io/xpipe/app/browser/BrowserTransferModel.java
@@ -130,7 +130,9 @@ public class BrowserTransferModel {
                         BrowserFileTransferMode.COPY,
                         false,
                         progress -> {
-                            item.getProgress().setValue(progress);
+                            synchronized (item.getProgress()) {
+                                item.getProgress().setValue(progress);
+                            }
                             item.getOpenFileSystemModel().getProgress().setValue(progress);
                         });
                 op.execute();