diff --git a/aegisub/src/subtitle_format_encore.cpp b/aegisub/src/subtitle_format_encore.cpp
index a0d726fde..c78605220 100644
--- a/aegisub/src/subtitle_format_encore.cpp
+++ b/aegisub/src/subtitle_format_encore.cpp
@@ -53,6 +53,10 @@ wxArrayString EncoreSubtitleFormat::GetWriteWildcards() const {
 	return formats;
 }
 
+bool EncoreSubtitleFormat::CanWriteFile(wxString const& filename) const {
+	return filename.EndsWith(".encore.txt");
+}
+
 void EncoreSubtitleFormat::WriteFile(const AssFile *src, wxString const& filename, wxString const&) const {
 	FractionalTime ft = AskForFPS(true);
 	if (!ft.FPS().IsLoaded()) return;
diff --git a/aegisub/src/subtitle_format_encore.h b/aegisub/src/subtitle_format_encore.h
index dd163088e..ad79811e7 100644
--- a/aegisub/src/subtitle_format_encore.h
+++ b/aegisub/src/subtitle_format_encore.h
@@ -46,5 +46,6 @@ class EncoreSubtitleFormat : public SubtitleFormat {
 public:
 	EncoreSubtitleFormat();
 	wxArrayString GetWriteWildcards() const;
+	bool CanWriteFile(wxString const& filename) const;
 	void WriteFile(const AssFile *src, wxString const& filename, wxString const&) const;
 };