diff --git a/stim/visualization/cylinder.h b/stim/visualization/cylinder.h
index 53fa2f3..f70c679 100644
--- a/stim/visualization/cylinder.h
+++ b/stim/visualization/cylinder.h
@@ -56,13 +56,12 @@ public:
 		init();
 	}
 
-/*
 	cylinder(stim::centerline<T> p, std::vector<T> s)
 	{
-		d = p;
+		//was d = s;
+		p = s;
 		init();
 	}
-*/
 	
 	//cylinder(centerline<T>c, T r) : centerline(c) {
 	//	init();
--
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