diff --git a/profiles/arch/sparc/package.use b/profiles/arch/sparc/package.use
index 5b7f49cabf04d..1dcb210c88a91 100644
--- a/profiles/arch/sparc/package.use
+++ b/profiles/arch/sparc/package.use
@@ -1,6 +1,10 @@
-# Copyright 1999-2024 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
+# Andreas Sturmlechner <asturm@gentoo.org> (2025-04-28)
+# Sensical or not, both alternatives (qt5, qt6) are masked here.
+x11-themes/qtcurve gtk X
+
 # Michał Górny <mgorny@gentoo.org> (2016-09-24)
 # Enable the GPU targets matching the default VIDEO_CARDS
 dev-ml/llvm llvm_targets_AMDGPU