diff --git a/src/test/kc/complex/splines/truetype-splines.kc b/src/test/kc/complex/splines/truetype-splines.kc
index 9552493f6..744d913a6 100644
--- a/src/test/kc/complex/splines/truetype-splines.kc
+++ b/src/test/kc/complex/splines/truetype-splines.kc
@@ -11,6 +11,7 @@ const char* PRINT_SCREEN = 0x0400;
 const char* BITMAP_SCREEN = 0x5c00;
 const char* BITMAP_GRAPHICS = 0x6000;
 
+// A segment of a spline
 struct Segment {
     enum SegmentType { MOVE_TO, SPLINE_TO, LINE_TO} type;
     struct SplineVector16 to;