diff --git a/gio/fam/meson.build b/gio/fam/meson.build
index fdbdd15c6..d24670a63 100644
--- a/gio/fam/meson.build
+++ b/gio/fam/meson.build
@@ -1,36 +1,36 @@
-# FIXME: We should use subdir_done() instead of if blocks, but it's broken in
-# meson 0.46.1. See https://github.com/mesonbuild/meson/issues/3700.
-if get_option('fam')
-  fam_dep = cc.find_library('fam')
-  fam_c_args = ['-DG_DISABLE_DEPRECATED'] + gio_c_args
-  if cc.has_function('FAMNoExists', dependencies : fam_dep)
-    fam_c_args += '-DHAVE_FAM_NO_EXISTS=1'
-  endif
-
-  deps = [
-    fam_dep,
-    libglib_dep,
-    libgobject_dep,
-    libgio_dep,
-  ]
-
-  symbol_map = join_paths(meson.current_source_dir(), 'gfamfilemonitor.map')
-  fam_ldflags = cc.get_supported_link_arguments([
-    '-Wl,--version-script,' + symbol_map,
-    '-Wl,-no-undefined',
-  ])
-
-  module = shared_module('giofam', 'gfamfilemonitor.c',
-    include_directories : [gmoduleinc],
-    dependencies : deps,
-    c_args : fam_c_args,
-    link_args : fam_ldflags,
-    link_depends : symbol_map,
-    install_dir : glib_giomodulesdir,
-    install : true,
-  )
-
-  if not meson.is_cross_build()
-    meson.add_install_script('../gio-querymodules-wrapper.py', gio_querymodules.full_path(), glib_giomodulesdir)
-  endif
+if not get_option('fam')
+  subdir_done()
+endif
+
+fam_dep = cc.find_library('fam')
+fam_c_args = ['-DG_DISABLE_DEPRECATED'] + gio_c_args
+if cc.has_function('FAMNoExists', dependencies : fam_dep)
+  fam_c_args += '-DHAVE_FAM_NO_EXISTS=1'
+endif
+
+deps = [
+  fam_dep,
+  libglib_dep,
+  libgobject_dep,
+  libgio_dep,
+]
+
+symbol_map = join_paths(meson.current_source_dir(), 'gfamfilemonitor.map')
+fam_ldflags = cc.get_supported_link_arguments([
+  '-Wl,--version-script,' + symbol_map,
+  '-Wl,-no-undefined',
+])
+
+module = shared_module('giofam', 'gfamfilemonitor.c',
+  include_directories : [gmoduleinc],
+  dependencies : deps,
+  c_args : fam_c_args,
+  link_args : fam_ldflags,
+  link_depends : symbol_map,
+  install_dir : glib_giomodulesdir,
+  install : true,
+)
+
+if not meson.is_cross_build()
+  meson.add_install_script('../gio-querymodules-wrapper.py', gio_querymodules.full_path(), glib_giomodulesdir)
 endif