diff --git a/src/chart/generator/axis.h b/src/chart/generator/axis.h
index d43429f6b..70b59a16e 100644
--- a/src/chart/generator/axis.h
+++ b/src/chart/generator/axis.h
@@ -170,7 +170,7 @@ struct Axis
 
 struct Axises : AbstractAxises<Axis>
 {
-	Geom::Point origo() const;
+	[[nodiscard]] Geom::Point origo() const;
 };
 
 }
diff --git a/src/chart/generator/plotbuilder.h b/src/chart/generator/plotbuilder.h
index 2c3a8f3fb..0c03170d2 100644
--- a/src/chart/generator/plotbuilder.h
+++ b/src/chart/generator/plotbuilder.h
@@ -41,7 +41,8 @@ class PlotBuilder
 	void clearEmptyBuckets(const Buckets &buckets, bool main) const;
 	void addSpecLayout(Buckets &buckets);
 
-	Math::Range<double> &getMeasTrackRange(ChannelId type) const;
+	[[nodiscard]] Math::Range<double> &getMeasTrackRange(
+	    ChannelId type) const;
 };
 }