diff --git a/components/renderers/cpp/src/splatter.cu b/components/renderers/cpp/src/splatter.cu
index c7456e57bf4425a6f16020a66c885d58dbdda5a4..443ec7b32976cc946f0d2f4411b31ffac6f64172 100644
--- a/components/renderers/cpp/src/splatter.cu
+++ b/components/renderers/cpp/src/splatter.cu
@@ -61,7 +61,7 @@ __device__ inline float4 make_float4(const uchar4 &c) {
 #define ENERGY_THRESHOLD 0.1f
 #define SMOOTHING_MULTIPLIER_A 10.0f	// For surface search
 #define SMOOTHING_MULTIPLIER_B 4.0f		// For z contribution
-#define SMOOTHING_MULTIPLIER_C 4.0f		// For colour contribution
+#define SMOOTHING_MULTIPLIER_C 1.0f		// For colour contribution
 
 #define ACCUM_DIAMETER 8