diff --git a/aegisub/src/video_provider_ffmpegsource.cpp b/aegisub/src/video_provider_ffmpegsource.cpp
index 10ef687d5..558262e9b 100644
--- a/aegisub/src/video_provider_ffmpegsource.cpp
+++ b/aegisub/src/video_provider_ffmpegsource.cpp
@@ -211,7 +211,7 @@ void FFmpegSourceVideoProvider::LoadVideo(wxString filename) {
 			ColorSpace = wxString::Format("%s.601", ColorRange);
 			break;
 		case FFMS_CS_SMPTE240M:
-			ColorSpace = wxString::Format("%s.204M", ColorRange);
+			ColorSpace = wxString::Format("%s.240M", ColorRange);
 			break;
 		default:
 			throw VideoOpenError("Unknown video color space");