diff --git a/graph/path/morphism_apply_functions.go b/graph/path/morphism_apply_functions.go
index 838d90b..846eb9f 100644
--- a/graph/path/morphism_apply_functions.go
+++ b/graph/path/morphism_apply_functions.go
@@ -57,7 +57,8 @@ func isMorphism(nodes ...string) morphism {
 	}
 }
 
-// hasMorphism is
+// hasMorphism is the set of nodes that is reachable via either a *Path, a
+// single node.(string) or a list of nodes.([]string)
 func hasMorphism(via interface{}, nodes ...string) morphism {
 	return morphism{
 		Name:     "has",