diff --git a/distrib/relocatable/xmlada_gtk.gpr b/distrib/relocatable/xmlada_gtk.gpr
index fec3367..78dde5b 100644
--- a/distrib/relocatable/xmlada_gtk.gpr
+++ b/distrib/relocatable/xmlada_gtk.gpr
@@ -2,6 +2,7 @@ with "xmlada_unicode";
 with "xmlada_input";
 with "xmlada_sax";
 with "xmlada_avoid_recompile";
+with "gtkada";
 project XmlAda_Gtk is
     for Source_Dirs use ("../include/xmlada");
     for Source_List_File use "xmlada_xml_gtk.lgpr";
diff --git a/distrib/static/xmlada_gtk.gpr b/distrib/static/xmlada_gtk.gpr
index 8a87cce..2821aac 100644
--- a/distrib/static/xmlada_gtk.gpr
+++ b/distrib/static/xmlada_gtk.gpr
@@ -2,6 +2,7 @@ with "xmlada_unicode";
 with "xmlada_input";
 with "xmlada_sax";
 with "xmlada_avoid_recompile";
+with "gtkada";
 project XmlAda_Gtk is
     for Source_Dirs use ("../include/xmlada");
     for Source_List_File use "xmlada_xml_gtk.lgpr";