diff --git a/UI/data/locale/en-US.ini b/UI/data/locale/en-US.ini
index f783e7cc6..0c8d41969 100644
--- a/UI/data/locale/en-US.ini
+++ b/UI/data/locale/en-US.ini
@@ -1197,11 +1197,6 @@ AddUrl.Title="Add Source via URL"
 AddUrl.Text="You have dragged a URL into OBS. This will automatically add the link as a source. Continue?"
 AddUrl.Text.Url="URL: %1"
 
-# Dynamic output size
-ResizeOutputSizeOfSource="Resize output (source size)"
-ResizeOutputSizeOfSource.Text="The base and output resolutions will be resized to the size of the current source."
-ResizeOutputSizeOfSource.Continue="Do you want to continue?"
-
 PreviewTransition="Preview Transition"
 
 # Import Dialog
diff --git a/UI/window-basic-main.cpp b/UI/window-basic-main.cpp
index 0963607a4..6efd98e86 100644
--- a/UI/window-basic-main.cpp
+++ b/UI/window-basic-main.cpp
@@ -5608,18 +5608,6 @@ void OBSBasic::CreateSourcePopupMenu(int idx, bool preview)
 			popup.addSeparator();
 		}
 
-		QAction *resizeOutput =
-			popup.addAction(QTStr("ResizeOutputSizeOfSource"), this,
-					SLOT(ResizeOutputSizeOfSource()));
-
-		int width = obs_source_get_width(source);
-		int height = obs_source_get_height(source);
-
-		resizeOutput->setEnabled(!obs_video_active());
-
-		if (width < 8 || height < 8)
-			resizeOutput->setEnabled(false);
-
 		scaleFilteringMenu = new QMenu(QTStr("ScaleFiltering"));
 		popup.addMenu(
 			AddScaleFilteringMenu(scaleFilteringMenu, sceneItem));
@@ -9620,40 +9608,6 @@ void OBSBasic::on_actionShowAbout_triggered()
 	about->setAttribute(Qt::WA_DeleteOnClose, true);
 }
 
-void OBSBasic::ResizeOutputSizeOfSource()
-{
-	if (obs_video_active())
-		return;
-
-	QMessageBox resize_output(this);
-	resize_output.setText(QTStr("ResizeOutputSizeOfSource.Text") + "\n\n" +
-			      QTStr("ResizeOutputSizeOfSource.Continue"));
-	QAbstractButton *Yes =
-		resize_output.addButton(QTStr("Yes"), QMessageBox::YesRole);
-	resize_output.addButton(QTStr("No"), QMessageBox::NoRole);
-	resize_output.setIcon(QMessageBox::Warning);
-	resize_output.setWindowTitle(QTStr("ResizeOutputSizeOfSource"));
-	resize_output.exec();
-
-	if (resize_output.clickedButton() != Yes)
-		return;
-
-	OBSSource source = obs_sceneitem_get_source(GetCurrentSceneItem());
-
-	int width = obs_source_get_width(source);
-	int height = obs_source_get_height(source);
-
-	config_set_uint(basicConfig, "Video", "BaseCX", width);
-	config_set_uint(basicConfig, "Video", "BaseCY", height);
-	config_set_uint(basicConfig, "Video", "OutputCX", width);
-	config_set_uint(basicConfig, "Video", "OutputCY", height);
-
-	ResetVideo();
-	ResetOutputs();
-	config_save_safe(basicConfig, "tmp", nullptr);
-	on_actionFitToScreen_triggered();
-}
-
 QAction *OBSBasic::AddDockWidget(QDockWidget *dock)
 {
 	QAction *action = ui->menuDocks->addAction(dock->windowTitle());
diff --git a/UI/window-basic-main.hpp b/UI/window-basic-main.hpp
index 416944099..f569398e0 100644
--- a/UI/window-basic-main.hpp
+++ b/UI/window-basic-main.hpp
@@ -1135,8 +1135,6 @@ private slots:
 
 	void StackedMixerAreaContextMenuRequested();
 
-	void ResizeOutputSizeOfSource();
-
 public slots:
 	void on_actionResetTransform_triggered();