diff --git a/src/views/Edit/Sources/X11grab.js b/src/views/Edit/Sources/X11grab.js
index 6546c6e..508abc1 100644
--- a/src/views/Edit/Sources/X11grab.js
+++ b/src/views/Edit/Sources/X11grab.js
@@ -55,7 +55,7 @@ const createInputs = (settings) => {
 		input.options.push('-fflags', '+' + settings.fflags.join('+'));
 	}
 	input.options.push('-f', 'x11grab');
-	input.options.push('-video_size', settings.size);
+	input.options.push('-video_size', settings.video_size);
 	input.options.push('-framerate', settings.framerate);
 	if (settings.follow_mouse === true) {
 		input.options.push('-draw_mouse', '1');