diff --git a/src/accumulation_buffer.rs b/src/accumulation_buffer.rs
index 2d1db3c..5e0656b 100644
--- a/src/accumulation_buffer.rs
+++ b/src/accumulation_buffer.rs
@@ -56,7 +56,7 @@ impl AccumulationBuffer {
         let colour_sum_t = buffer_colour_sum.values + colour_sum_y;
         buffer_colour_bias.values = (colour_sum_t - buffer_colour_sum.values) - colour_sum_y;
         buffer_colour_sum.values = colour_sum_t;
-        buffer_colour.values = buffer_colour_sum.values * (1.0 / *buffer_weight);
+        buffer_colour.values = buffer_colour_sum.values / *buffer_weight;
     }
 
     pub fn merge_tile(&mut self, tile: &Tile, src: &AccumulationBuffer) {