diff --git a/src/meson.build b/src/meson.build
index 4876d80..b7f0706 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -7,6 +7,7 @@
   'bej_encoder_core.c',
   'bej_encoder_metadata.c',
   'bej_decoder_json.cpp',
+  'bej_encoder_json.cpp',
   include_directories : libbej_incs,
   implicit_include_directories: false,
   version: meson.project_version(),