diff --git a/gtk/gtkaboutdialog.c b/gtk/gtkaboutdialog.c
index 3dff624..14fad51 100644
--- a/gtk/gtkaboutdialog.c
+++ b/gtk/gtkaboutdialog.c
@@ -128,7 +128,8 @@ static const LicenseInfo gtk_license_info [] = {
   { N_("GNU General Public License, version 3 only"), "https://www.gnu.org/licenses/gpl-3.0.html" },
   { N_("GNU Lesser General Public License, version 2.1 only"), "https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html" },
   { N_("GNU Lesser General Public License, version 3 only"), "https://www.gnu.org/licenses/lgpl-3.0.html" },
-  { N_("GNU Affero General Public License, version 3 or later"), "https://www.gnu.org/licenses/agpl-3.0.html" }
+  { N_("GNU Affero General Public License, version 3 or later"), "https://www.gnu.org/licenses/agpl-3.0.html" },
+  { N_("GNU Affero General Public License, version 3 only"), "https://www.gnu.org/licenses/agpl-3.0.html" }
 };
 
 typedef struct
@@ -2564,7 +2565,7 @@ gtk_about_dialog_set_license_type (GtkAboutDialog *about,
 
   g_return_if_fail (GTK_IS_ABOUT_DIALOG (about));
   g_return_if_fail (license_type >= GTK_LICENSE_UNKNOWN &&
-                    license_type <= GTK_LICENSE_AGPL_3_0);
+                    license_type <= GTK_LICENSE_AGPL_3_0_ONLY);
 
   priv = about->priv;
 
diff --git a/gtk/gtkaboutdialog.h b/gtk/gtkaboutdialog.h
index 703ba48..67be928 100644
--- a/gtk/gtkaboutdialog.h
+++ b/gtk/gtkaboutdialog.h
@@ -59,6 +59,7 @@ typedef struct _GtkAboutDialogPrivate GtkAboutDialogPrivate;
  * @GTK_LICENSE_LGPL_2_1_ONLY: The GNU Lesser General Public License, version 2.1 only. Since 3.12.
  * @GTK_LICENSE_LGPL_3_0_ONLY: The GNU Lesser General Public License, version 3.0 only. Since 3.12.
  * @GTK_LICENSE_AGPL_3_0: The GNU Affero General Public License, version 3.0 or later. Since: 3.22.
+ * @GTK_LICENSE_AGPL_3_0_ONLY: The GNU Affero General Public License, version 3.0 only.
  *
  * The type of license for an application.
  *
@@ -86,7 +87,8 @@ typedef enum {
   GTK_LICENSE_LGPL_2_1_ONLY,
   GTK_LICENSE_LGPL_3_0_ONLY,
 
-  GTK_LICENSE_AGPL_3_0
+  GTK_LICENSE_AGPL_3_0,
+  GTK_LICENSE_AGPL_3_0_ONLY
 } GtkLicense;
 
 /**
