diff --git a/NetworkManager-branding.changes b/NetworkManager-branding.changes
index 07cfe8a..bdced85 100644
--- a/NetworkManager-branding.changes
+++ b/NetworkManager-branding.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Thu Mar 14 10:14:55 UTC 2024 - Dominique Leuenberger <dimstar@opensuse.org>
+
+- Ensure flavor has a value, at least %nil.
+- ExclusiveArch: %nil is invalid: give it a value (do-not-build).
+
 -------------------------------------------------------------------
 Fri Dec  1 16:41:17 UTC 2023 - Dominique Leuenberger <dimstar@opensuse.org>
 
diff --git a/NetworkManager-branding.spec b/NetworkManager-branding.spec
index af1b70c..293da21 100644
--- a/NetworkManager-branding.spec
+++ b/NetworkManager-branding.spec
@@ -1,7 +1,7 @@
 #
-# spec file
+# spec file for package NetworkManager-branding
 #
-# Copyright (c) 2023 SUSE LLC
+# Copyright (c) 2024 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -16,7 +16,7 @@
 #
 
 
-%define flavor @BUILD_FLAVOR@
+%define flavor @BUILD_FLAVOR@%nil
 %if "%{flavor}" == ""
 %define branding_name %{nil}
 ExclusiveArch:  %{nil}
@@ -47,7 +47,7 @@ Provides:       NetworkManager-branding = %{version}
 BuildArch:      noarch
 %if (0%{?build_SLE} && 0%{?is_opensuse}) || (0%{?build_openSUSE} && ! 0%{?is_opensuse})
 # Don't build SLE branding on openSUSE and vice-versa
-ExclusiveArch:  %{nil}
+ExclusiveArch:  do-not-build
 %endif
 
 %description