diff --git a/src/polyline3d.scad b/src/polyline3d.scad
index 64699a6a..5ccbd78d 100644
--- a/src/polyline3d.scad
+++ b/src/polyline3d.scad
@@ -29,7 +29,7 @@ module polyline3d(points, thickness, startingStyle = "CAP_CIRCLE", endingStyle =
                p1Style = p1Style, p2Style = p2Style);
 
         // hook for testing
-        test_line3d_segment(index, p1, p2, thickness, p1Style, p2Style);               
+        test_polyline3d_line3d_segment(index, p1, p2, thickness, p1Style, p2Style);               
     }
 
     module polyline3d_inner(index) {
@@ -43,6 +43,6 @@ module polyline3d(points, thickness, startingStyle = "CAP_CIRCLE", endingStyle =
 }
 
 // override it to test
-module test_line3d_segment(index, point1, point2, thickness, p1Style, p2Style) {
+module test_polyline3d_line3d_segment(index, point1, point2, thickness, p1Style, p2Style) {
 
 }
\ No newline at end of file
diff --git a/test/test_polyline3d.scad b/test/test_polyline3d.scad
index 71c43f72..9960810e 100644
--- a/test/test_polyline3d.scad
+++ b/test/test_polyline3d.scad
@@ -63,7 +63,7 @@ module test_polyline3d() {
     
         include <polyline3d.scad>;
         
-        module test_line3d_segment(index, point1, point2, thickness, p1Style, p2Style) {
+        module test_polyline3d_line3d_segment(index, point1, point2, thickness, p1Style, p2Style) {
         
             assertCorrectSegment(
                 [points[index - 1], points[index]],
@@ -89,7 +89,7 @@ module test_polyline3d() {
     
         include <polyline3d.scad>;
         
-        module test_line3d_segment(index, point1, point2, thickness, p1Style, p2Style) {
+        module test_polyline3d_line3d_segment(index, point1, point2, thickness, p1Style, p2Style) {
         
             assertCorrectSegment(
                 [points[index - 1], points[index]],
@@ -116,7 +116,7 @@ module test_polyline3d() {
     
         include <polyline3d.scad>;
         
-        module test_line3d_segment(index, point1, point2, thickness, p1Style, p2Style) {
+        module test_polyline3d_line3d_segment(index, point1, point2, thickness, p1Style, p2Style) {
         
             assertCorrectSegment(
                 [points[index - 1], points[index]],
@@ -154,7 +154,7 @@ module test_polyline3d() {
     
         include <polyline3d.scad>;
         
-        module test_line3d_segment(index, point1, point2, thickness, p1Style, p2Style) {
+        module test_polyline3d_line3d_segment(index, point1, point2, thickness, p1Style, p2Style) {
         
             assertCorrectSegment(
                 [points[index - 1], points[index]],