diff --git a/source/gl_rmain.c b/source/gl_rmain.c
index c7d0a6e..be822d9 100644
--- a/source/gl_rmain.c
+++ b/source/gl_rmain.c
@@ -570,7 +570,7 @@ static void R_DrawAliasModel (entity_t *e)
 			VectorSubtract (currententity->origin,
 							cl_dlights[lnum].origin,
 							dist);
-			add = (cl_dlights[lnum].radius * cl_dlights[lnum].radius * 8) / (Length(dist) * Length(dist)); // FIXME Deek
+			add = (cl_dlights[lnum].radius * cl_dlights[lnum].radius * 8) / (DotProduct(dist, dist)); // FIXME Deek
 
 			if (add > 0)
 			{