diff --git a/aegisub/Makefile.am b/aegisub/Makefile.am
index d27001242..1a3305a8c 100644
--- a/aegisub/Makefile.am
+++ b/aegisub/Makefile.am
@@ -128,6 +128,7 @@ aegisub_SOURCES = \
 	video_display_visual.cpp \
 	video_frame.cpp \
 	video_provider.cpp \
+	video_provider_lavc.cpp \
 	video_slider.cpp \
 	video_zoom.cpp \
 	MatroskaParser.c