diff --git a/src/components/launch/LaunchWindow.tsx b/src/components/launch/LaunchWindow.tsx
index bba5f494..e40d58c9 100644
--- a/src/components/launch/LaunchWindow.tsx
+++ b/src/components/launch/LaunchWindow.tsx
@@ -639,6 +639,7 @@ export function LaunchWindow() {
 
 				{/* Source selector */}
 				<button
+					data-testid="launch-source-selector-button"
 					className={`${hudGroupClasses} h-8 ${trayLayout === "vertical" ? "w-8 justify-center px-0" : "px-2.5"} ${styles.electronNoDrag}`}
 					onClick={openSourceSelector}
 					disabled={recording}
diff --git a/src/components/launch/SourceSelector.tsx b/src/components/launch/SourceSelector.tsx
index 17e7444c..b1a8a6a9 100644
--- a/src/components/launch/SourceSelector.tsx
+++ b/src/components/launch/SourceSelector.tsx
@@ -108,9 +108,12 @@ export function SourceSelector() {
 
 	const renderSourceCard = (source: DesktopSource) => {
 		const isSelected = selectedSource?.id === source.id;
+		const sourceKind = source.id.startsWith("screen:") ? "screen" : "window";
 		return (
 			<div
 				key={source.id}
+				data-testid="source-selector-card"
+				data-source-kind={sourceKind}
 				className={`${styles.sourceCard} ${isSelected ? styles.selected : ""} p-1.5`}
 				onClick={() => handleSourceSelect(source)}
 			>