diff --git a/unix/xserver/hw/vnc/Makefile.am b/unix/xserver/hw/vnc/Makefile.am
index adf84e6..403dd7f 100644
--- a/unix/xserver/hw/vnc/Makefile.am
+++ b/unix/xserver/hw/vnc/Makefile.am
@@ -53,7 +53,7 @@ Xvnc_CPPFLAGS = $(XVNC_CPPFLAGS) -DKASMVNC -DNO_MODULE_EXTS \
 
 Xvnc_LDADD = $(XVNC_LIBS) libvnccommon.la $(COMMON_LIBS) \
 	$(XSERVER_LIBS) $(XSERVER_SYS_LIBS) $(XVNC_SYS_LIBS) -lX11 -lwebp -lsharpyuv -lssl -lcrypto -lcrypt \
-	-lfreetype -lvpx
+	-lfreetype -lvpx -lavcodec -lavutil -lavformat -lswscale
 
 Xvnc_LDFLAGS = $(LD_EXPORT_SYMBOLS_FLAG) -fopenmp