diff --git a/fastlib/u/march/emst/dtb.h b/fastlib/u/march/emst/dtb.h
index 0164f02626..c7c99a4b50 100644
--- a/fastlib/u/march/emst/dtb.h
+++ b/fastlib/u/march/emst/dtb.h
@@ -366,8 +366,8 @@ class DualTreeBoruvka {
       }
       
       query_node->stat().set_max_neighbor_distance(
-                                                   max(query_node->left()->stat().max_neighbor_distance(), 
-                                                       query_node->right()->stat().max_neighbor_distance()));
+          max(query_node->left()->stat().max_neighbor_distance(), 
+              query_node->right()->stat().max_neighbor_distance()));
       
     }// end else
     
diff --git a/fastlib/u/march/emst/test_data.csv b/fastlib/u/march/emst/test_data.csv
new file mode 100644
index 0000000000..b190ddfbb4
--- /dev/null
+++ b/fastlib/u/march/emst/test_data.csv
@@ -0,0 +1,20 @@
+0.3964647737602753 0.8404853694114252
+0.3533360972452435 0.4465834347965441
+0.3186927723118806 0.8864284332230312
+0.01558284940832877 0.5840902203172718
+0.1593686265318048 0.3837158748071943
+0.6910043733821958 0.05885891359273643
+0.899854306161604 0.1635459506303647
+0.1590715025818064 0.5330647140218545
+0.6041441897112385 0.5826990212072189
+0.2699711179070157 0.3904781954634089
+0.2934005701189513 0.7423774060339809
+0.298525606318119 0.07553807853778238
+0.4049826335833338 0.8573779427081831
+0.9419683232918992 0.6628306597899964
+0.8464757799300067 0.002755081426883521
+0.4623792450254847 0.5325960244382983
+0.78787662089292 0.2656122349713712
+0.9827522631010304 0.3067851306141804
+0.6008551364891055 0.608715653358658
+0.2124387982011875 0.8858951305876062