diff --git a/dev-qt/qtgraphs/qtgraphs-6.12.9999.ebuild b/dev-qt/qtgraphs/qtgraphs-6.12.9999.ebuild
index 610d83508cace..0a16ebe732d23 100644
--- a/dev-qt/qtgraphs/qtgraphs-6.12.9999.ebuild
+++ b/dev-qt/qtgraphs/qtgraphs-6.12.9999.ebuild
@@ -34,7 +34,8 @@ src_configure() {
 	local mycmakeargs=(
 		# simpler than keeping track of and disabling every graphs-3d* features
 		$(cmake_use_find_package quick3d Qt6Quick3D)
-		# not packaged yet, and Qt disables it by default for now
+		# qtcanvaspainter is not packaged yet, and the default is the
+		# "high_quality_backend" making which is best debatable
 		-DQT_FEATURE_graphs_2d_high_performance_backend=OFF
 	)
 
diff --git a/dev-qt/qtgraphs/qtgraphs-6.9999.ebuild b/dev-qt/qtgraphs/qtgraphs-6.9999.ebuild
index 610d83508cace..0a16ebe732d23 100644
--- a/dev-qt/qtgraphs/qtgraphs-6.9999.ebuild
+++ b/dev-qt/qtgraphs/qtgraphs-6.9999.ebuild
@@ -34,7 +34,8 @@ src_configure() {
 	local mycmakeargs=(
 		# simpler than keeping track of and disabling every graphs-3d* features
 		$(cmake_use_find_package quick3d Qt6Quick3D)
-		# not packaged yet, and Qt disables it by default for now
+		# qtcanvaspainter is not packaged yet, and the default is the
+		# "high_quality_backend" making which is best debatable
 		-DQT_FEATURE_graphs_2d_high_performance_backend=OFF
 	)