diff --git a/meson.build b/meson.build
index 173f3968..4304d623 100644
--- a/meson.build
+++ b/meson.build
@@ -1,148 +1,148 @@
 project('adg', 'c',
     meson_version: '>=0.56.0',
     version:       '0.9.3',
     license:       'LGPL-2.1-or-later'
 )
 
 metadata = {
     'api':      '1.0',
     'homepage': 'http://adg.entidi.com/',
     'tracker':  'https://track.entidi.com/project/view/2/',
 }
 
 
 # How to handle LT versions (current:revision:age):
 # - If the library source code has changed at all since the last
 #   update, then increment revision (‘c:r:a’ becomes ‘c:r+1:a’).
 # - If any interfaces have been added, removed, or changed since the
 #   last update, increment current, and set revision to 0.
 # - If any interfaces have been added since the last public release,
 #   then increment age.
 # - If any interfaces have been removed or changed since the last
 #   public release, then set age to 0.
 cpml_current  = 4
 cpml_revision = 2
 cpml_age      = 0
 adg_current  = 8
 adg_revision = 1
 adg_age      = 1
 
 
 cc         = meson.get_compiler('c')
 gnome      = import('gnome')
 i18n       = import('i18n')
 pkgconfig  = import('pkgconfig')
 pkgdir     = meson.project_name() + '-' + metadata['api']
 prefix     = get_option('prefix')
 datadir    = join_paths(prefix, get_option('datadir'))
 pkgdatadir = join_paths(datadir, pkgdir)
 localedir  = join_paths(prefix, get_option('localedir'))
 includedir = join_paths(prefix, get_option('includedir'), pkgdir)
 
 
 m_dep = cc.find_library('m', required: false)
 
 # G_ADD_PRIVATE macro required
 gobject_dep = dependency('gobject-2.0', version: '>=2.38.0')
 
 # cairo_scaled_font_text_to_glyphs() API required
 cairo_dep = dependency('cairo', version: '>=1.7.4')
 
 # Any release
 cairogobject_dep = dependency('cairo-gobject')
 
 # Cairo support in Pango required
 pangocairo_dep = dependency('pangocairo', version: '>=1.10.0',
                             required: get_option('pango'))
 
 # Lookup which GTK package to use
 gtk = get_option('gtk')
 if gtk == 'no'
-    gtk_dep = []
+    gtk_dep = dependency('', required: false)
 else
     if gtk != 'gtk2'
         # First stable release
         gtk_dep = dependency('gtk+-3.0', version: '>= 3.0.0',
                              required: gtk == 'gtk3')
     endif
     use_gtk2 = gtk == 'gtk2' or not gtk_dep.found()
     if use_gtk2
         # gtk_widget_get_allocation() API required
         gtk_dep = dependency('gtk+-2.0', version: '>=2.18.0')
     endif
 endif
 
 # Both "check" and "yes" mean gladeui autodetection,
 # but "yes" will fail if gladeui is not found
 catalogdir = get_option('catalogdir')
 if catalogdir == 'yes' or catalogdir == 'check'
     glade_dep = dependency('gladeui-2.0', required: false)
     if not glade_dep.found()
         glade_dep = dependency('gladeui-1.0', required: catalogdir == 'yes')
     endif
     if glade_dep.found()
         catalogdir = glade_dep.get_variable(pkgconfig: 'catalogdir')
     else
         catalogdir = ''
     endif
 elif catalogdir == 'no'
     # Both 'no' and '' mean "Do not install catalogs"
     catalogdir = ''
 endif
 
 # Support for introspection annotations required
 gtkdoc_dep = dependency('gtk-doc', required: get_option('gtk-doc'),
                         version: '>=1.12')
 
 gtkdocdir = get_option('gtkdocdir')
 if gtkdocdir == ''
     gtkdocdir = join_paths(get_option('prefix'), get_option('datadir'), 'gtk-doc', 'html')
 endif
 
 # First stable release
 introspection_dep = dependency('gobject-introspection-1.0', version: '>=1.0.0',
                                required: get_option('introspection'))
 
 # Check if GLib supports the testing framework
 testing = dependency('glib-2.0', version: '>=2.16.0',
                      required: get_option('tests'))
 
 
 subdir('src')
 subdir('po')
 if gtk_dep.found()
     subdir('demo')
 endif
 if gtkdoc_dep.found()
     subdir('docs/cpml')
     subdir('docs/adg')
 endif
 
 
 summary({
     'Compiler':
         cc.get_id(),
     'CPML library to use':
         'internal (cpml-@0@ @1@)'.format(metadata['api'], meson.project_version()),
     'Use pango for text':
         pangocairo_dep.found() ?
             'yes (@0@ @1@)'.format(pangocairo_dep.name(), pangocairo_dep.version()) :
             'no (use cairo toy API)',
     'GTK support':
         gtk_dep.found() ?
             'yes (@0@ @1@)'.format(gtk_dep.name(), gtk_dep.version()) :
             'no',
     'Install glade catalogs':
         catalogdir == '' ? 'no' : 'yes, install into @0@'.format(catalogdir),
     'Build API reference':
         gtkdoc_dep.found() ?
             'yes (@0@ @1@), install into @2@'.
                 format(gtkdoc_dep.name(), gtkdoc_dep.version(), gtkdocdir) :
             'no',
     'GObject instrospection':
         introspection_dep.found() ?
             'yes (@0@ @1@)'.format(introspection_dep.name(), introspection_dep.version()) :
             'no',
     'Test framework support':
         testing.found() ? 'yes' : 'no'
 })