diff --git a/src/meson.build b/src/meson.build
index 4364395..e491878 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -36,6 +36,7 @@
   stdplus_srcs += [
     'fd/create.cpp',
     'fd/dupable.cpp',
+    'fd/fmt.cpp',
     'fd/impl.cpp',
     'fd/line.cpp',
     'fd/managed.cpp',