diff --git a/src/logic/Window.swift b/src/logic/Window.swift
index 3be8e560..f6868f8a 100644
--- a/src/logic/Window.swift
+++ b/src/logic/Window.swift
@@ -112,7 +112,7 @@ class Window {
         if let position, let size,
            let view = (TilesView.recycledViews.first { $0.window_?.cgWindowId == cgWindowId }) {
             if !view.thumbnail.isHidden {
-                let thumbnailSize = TileView.thumbnailSize(screenshot.size(), false)
+                let thumbnailSize = TileView.thumbnailSize(size, false)
                 let newSize = thumbnailSize.width != view.thumbnail.frame.width || thumbnailSize.height != view.thumbnail.frame.height
                 view.thumbnail.updateContents(screenshot, thumbnailSize)
                 // if the thumbnail size has changed, we need to refresh the open UI
diff --git a/src/logic/events/WindowCaptureEvents.swift b/src/logic/events/WindowCaptureEvents.swift
index f3e2daca..deab3260 100644
--- a/src/logic/events/WindowCaptureEvents.swift
+++ b/src/logic/events/WindowCaptureEvents.swift
@@ -271,7 +271,7 @@ extension SCStreamConfiguration {
             // capture screenshots as small as needed for the thumbnails
             let maxSize = TilesPanel.maxPossibleThumbnailSize
             guard maxSize.width > 0, maxSize.height > 0 else { return }
-            let scale = min(maxSize.width / originalSize.width, maxSize.height / originalSize.height)
+            let scale = min(1.0, maxSize.width / originalSize.width, maxSize.height / originalSize.height)
             width = Int((originalSize.width * scale).rounded())
             height = Int((originalSize.height * scale).rounded())
         }