diff --git a/graph/multi/weighted_directed.go b/graph/multi/weighted_directed.go
index 5f31b81ecd..4ef5b0b55e 100644
--- a/graph/multi/weighted_directed.go
+++ b/graph/multi/weighted_directed.go
@@ -130,8 +130,8 @@ func (g *WeightedDirectedGraph) SetWeightedLine(l graph.WeightedLine) {
 	g.lineIDs.Use(l.ID())
 }
 
-// RemoveLine removes l from the graph, leaving the terminal nodes. If the line does not exist
-// it is a no-op.
+// RemoveLine removes the line with the given end point and line IDs from the graph,
+// leaving the terminal nodes. If the line does not exist it is a no-op.
 func (g *WeightedDirectedGraph) RemoveLine(fid, tid, id int64) {
 	if _, ok := g.nodes[fid]; !ok {
 		return
diff --git a/graph/multi/weighted_undirected.go b/graph/multi/weighted_undirected.go
index 36938fe417..ac92063c37 100644
--- a/graph/multi/weighted_undirected.go
+++ b/graph/multi/weighted_undirected.go
@@ -87,7 +87,7 @@ func (g *WeightedUndirectedGraph) RemoveNode(id int64) {
 	g.nodeIDs.Release(id)
 }
 
-// NewLine returns a new WeightedLine from the source to the destination node.
+// NewWeightedLine returns a new WeightedLine from the source to the destination node.
 // The returned WeightedLine will have a graph-unique ID.
 // The Line's ID does not become valid in g until the Line is added to g.
 func (g *WeightedUndirectedGraph) NewWeightedLine(from, to graph.Node, weight float64) graph.WeightedLine {