diff --git a/AsyncImageLoader.Avalonia/AdvancedImage.axaml.cs b/AsyncImageLoader.Avalonia/AdvancedImage.axaml.cs
index c0a86d6..3529360 100644
--- a/AsyncImageLoader.Avalonia/AdvancedImage.axaml.cs
+++ b/AsyncImageLoader.Avalonia/AdvancedImage.axaml.cs
@@ -197,7 +197,7 @@ private async void UpdateImage(string? source, IAsyncImageLoader? loader) {
 
         var bitmap = await Task.Run(async () => {
             try {
-                if (source == null)
+                if (string.IsNullOrWhiteSpace(source))
                     return null;
 
                 // A small delay allows to cancel early if the image goes out of screen too fast (eg. scrolling)
diff --git a/AsyncImageLoader.Avalonia/ImageBrushLoader.cs b/AsyncImageLoader.Avalonia/ImageBrushLoader.cs
index 1972fb3..2ce55b9 100644
--- a/AsyncImageLoader.Avalonia/ImageBrushLoader.cs
+++ b/AsyncImageLoader.Avalonia/ImageBrushLoader.cs
@@ -25,8 +25,8 @@ private static async void OnSourceChanged(ImageBrush imageBrush, AvaloniaPropert
 
         Bitmap? bitmap = null;
         try {
-            if (newValue is not null) {
-                bitmap = await AsyncImageLoader.ProvideImageAsync(newValue);
+            if (!string.IsNullOrWhiteSpace(newValue)) {
+                bitmap = await AsyncImageLoader.ProvideImageAsync(newValue!);
             }
         }
         catch (Exception e) {
diff --git a/AsyncImageLoader.Avalonia/ImageLoader.cs b/AsyncImageLoader.Avalonia/ImageLoader.cs
index fc0f06d..3f68c19 100644
--- a/AsyncImageLoader.Avalonia/ImageLoader.cs
+++ b/AsyncImageLoader.Avalonia/ImageLoader.cs
@@ -40,7 +40,7 @@ private static async void OnSourceChanged(Image sender, AvaloniaPropertyChangedE
                 return new CancellationTokenSource();
             });
 
-        if (url == null) {
+        if (string.IsNullOrWhiteSpace(url)) {
             ((ICollection<KeyValuePair<Image, CancellationTokenSource>>)PendingOperations).Remove(
                 new KeyValuePair<Image, CancellationTokenSource>(sender, cts));
             sender.Source = null;