diff --git a/test/algorithms/buffer/multi_polygon_buffer.cpp b/test/algorithms/buffer/multi_polygon_buffer.cpp
index e6293b62f..94fdd18dc 100644
--- a/test/algorithms/buffer/multi_polygon_buffer.cpp
+++ b/test/algorithms/buffer/multi_polygon_buffer.cpp
@@ -24,7 +24,7 @@ static std::string const wrapped
 static std::string const triangles
     = "MULTIPOLYGON(((0 4,3 0,-2.5 -1,0 4)),((3 8,5.5 13,8 8,3 8)),((11 4,13.5 -1,8 0,11 4)))";
 
-// From robustness tests
+// From robustness tests (rt)
 
 // Case with duplicate points (due to chained boxes) (round)
 static std::string const rt_a
@@ -89,7 +89,6 @@ static std::string const rt_m1
 static std::string const rt_m2
     = "MULTIPOLYGON(((0 3,1 4,1 3,0 3)),((3 6,4 7,4 6,4 5,3 5,3 6)))";
 
-
 // Segment-intersection problem (disjoint nearly collinear segments were reported as intersecting), fixed.
 static std::string const rt_n
     = "MULTIPOLYGON(((0 0,1 1,1 0,0 0)),((3 3,4 4,4 3,3 3)))";
@@ -188,11 +187,9 @@ static std::string const rt_p20
 static std::string const rt_p21
     = "MULTIPOLYGON(((4 2,4 3,5 3,4 2)),((4 1,5 2,5 1,4 1)),((5 2,6 3,6 2,5 2)))";
 
-
 static std::string const rt_p22
     = "MULTIPOLYGON(((4 8,5 9,5 8,4 8)),((5 9,6 10,6 9,5 9)),((1 7,1 8,2 8,2 7,1 7)),((2 6,3 7,3 6,2 6)))";
 
-
 // Occupation map with a uu-turn
 static std::string const rt_q1
     = "MULTIPOLYGON(((4 6,4 7,5 7,5 6,4 6)),((1 6,1 7,2 7,2 6,1 6)),((1 9,1 10,2 10,2 9,1 9)))";