diff --git a/src/dialog_detached_video.cpp b/src/dialog_detached_video.cpp
index 80995a8ca..173f9e8d9 100644
--- a/src/dialog_detached_video.cpp
+++ b/src/dialog_detached_video.cpp
@@ -129,8 +129,8 @@ void DialogDetachedVideo::OnKeyDown(wxKeyEvent &evt) {
 	hotkey::check("Video Display", context, evt);
 }
 
-void DialogDetachedVideo::OnVideoOpen() {
-	if (context->project->VideoProvider())
+void DialogDetachedVideo::OnVideoOpen(AsyncVideoProvider *new_provider) {
+	if (new_provider)
 		SetTitle(fmt_tl("Video: %s", context->project->VideoName().filename()));
 	else {
 		Close();
diff --git a/src/dialog_detached_video.h b/src/dialog_detached_video.h
index ec8e17fe3..97be3fb59 100644
--- a/src/dialog_detached_video.h
+++ b/src/dialog_detached_video.h
@@ -38,6 +38,7 @@
 #include <libaegisub/signal.h>
 
 namespace agi { struct Context; }
+class AsyncVideoProvider;
 class PersistLocation;
 class VideoBox;
 class VideoDisplay;
@@ -53,7 +54,7 @@ class DialogDetachedVideo final : public wxDialog {
 	/// Minimize event handler to hack around a wx bug
 	void OnMinimize(wxIconizeEvent &evt);
 	void OnKeyDown(wxKeyEvent &evt);
-	void OnVideoOpen();
+	void OnVideoOpen(AsyncVideoProvider *new_provider);
 
 public:
 	/// @brief Constructor