diff --git a/glib/meson.build b/glib/meson.build
index 93600b29e..ba7929da4 100644
--- a/glib/meson.build
+++ b/glib/meson.build
@@ -448,19 +448,23 @@ gdb_conf = configuration_data()
 gdb_conf.set('datadir', glib_datadir)
 # This is also used in gobject/meson.build
 if host_system != 'windows'
-  # XXX: We add a leading './' because glib_libdir is an absolute path and we
-  # need it to be a relative path so that join_paths appends it to the end.
-  gdb_install_dir = join_paths(glib_datadir, 'gdb', 'auto-load', './' + glib_libdir)
+  gdb_install = true
 else
   # FIXME: Cannot install on Windows because the path will contain a drive
   # letter and colons are not allowed in paths.
-  gdb_install_dir = false
+  gdb_install = false
 endif
+
+# XXX: We add a leading './' because glib_libdir is an absolute path and we
+# need it to be a relative path so that join_paths appends it to the end.
+gdb_install_dir = join_paths(glib_datadir, 'gdb', 'auto-load', './' + glib_libdir)
+
 configure_file(
   input: 'libglib-gdb.py.in',
   output: 'libglib-2.0.so.@0@-gdb.py'.format(library_version),
   configuration: gdb_conf,
   install_dir: gdb_install_dir,
+  install: gdb_install,
 )
 
 if enable_systemtap
diff --git a/gobject/meson.build b/gobject/meson.build
index 536f15393..7e5150e6c 100644
--- a/gobject/meson.build
+++ b/gobject/meson.build
@@ -159,6 +159,7 @@ configure_file(
   output: 'libgobject-2.0.so.@0@-gdb.py'.format(library_version),
   configuration: gdb_conf,
   install_dir: gdb_install_dir,
+  install: gdb_install,
 )
 
 if enable_systemtap