diff --git a/src/r_segs.c b/src/r_segs.c
index 665176f85..dd7d5e991 100644
--- a/src/r_segs.c
+++ b/src/r_segs.c
@@ -45,9 +45,6 @@ static vertex_t segleft, segright;
 static fixed_t ceilingfrontslide, floorfrontslide, ceilingbackslide, floorbackslide;
 #endif
 
-// for R_CalculateSegDistance
-#define SOFTWARE_USE_FLOATS
-
 //
 // regular wall
 //