diff --git a/x11/qt6/qtquick3dphysics/Makefile b/x11/qt6/qtquick3dphysics/Makefile
index 721f61e5006..3dda9c7988b 100644
--- a/x11/qt6/qtquick3dphysics/Makefile
+++ b/x11/qt6/qtquick3dphysics/Makefile
@@ -1,5 +1,6 @@
 BROKEN-i386 =	various problems with MMX intrinsics
 BROKEN-riscv64 = #error "Unknown architecture"
+BROKEN-sparc64 = #error "Unknown architecture"
 
 QT6NAME =	QtQuick3dPhysics
 COMMENT =	Quick 3D Physics support for Qt6