diff --git a/ext/closedcaption/meson.build b/ext/closedcaption/meson.build
index a149d23cd3..841fab751c 100644
--- a/ext/closedcaption/meson.build
+++ b/ext/closedcaption/meson.build
@@ -1,8 +1,15 @@
 pangocairo_dep = dependency('pangocairo', version : '>= 1.22.0', required : false)
 
+zvbi_sources = [
+  'bit_slicer.c',
+  'decoder.c',
+  'raw_decoder.c',
+  'sampling_par.c',
+]
+
 if pangocairo_dep.found()
   gstclosedcaption = library('gstclosedcaption',
-    'gstccextractor.c', 'gstclosedcaption.c',
+    'gstccextractor.c', 'gstclosedcaption.c', 'gstline21dec.c', zvbi_sources,
     c_args : gst_plugins_bad_args,
     link_args : noseh_link_args,
     include_directories : [configinc],