diff --git a/stim/visualization/cylinder.h b/stim/visualization/cylinder.h
index c5d3a5d..0c1442c 100644
--- a/stim/visualization/cylinder.h
+++ b/stim/visualization/cylinder.h
@@ -345,7 +345,7 @@ class cylinder
 			}
 //			std::cout << e[idx].U.len() << " " << mags[idx][0] << std::endl;
 //			std::cout << v2 << std::endl;
-			return(v1);
+			return(v2);
 //			return (mags[idx][0] + (mags[idx+1][0]-mags[idx][0])*rat);
 	//	(
 		}
--
libgit2 0.21.4