diff --git a/cxx/helper_math.h b/cxx/helper_math.h
index 0fdfada..91e22d1 100644
--- a/cxx/helper_math.h
+++ b/cxx/helper_math.h
@@ -874,16 +874,16 @@ inline __host__ __device__ uint4 max(uint4 a, uint4 b) {
 // - linear interpolation between a and b, based on value t in [0, 1] range
 ////////////////////////////////////////////////////////////////////////////////
 
-inline __device__ __host__ float lerp(float a, float b, float t) {
+inline __device__ __host__ float mc_lerp(float a, float b, float t) {
     return a + t * (b - a);
 }
-inline __device__ __host__ float2 lerp(float2 a, float2 b, float t) {
+inline __device__ __host__ float2 mc_lerp(float2 a, float2 b, float t) {
     return a + t * (b - a);
 }
-inline __device__ __host__ float3 lerp(float3 a, float3 b, float t) {
+inline __device__ __host__ float3 mc_lerp(float3 a, float3 b, float t) {
     return a + t * (b - a);
 }
-inline __device__ __host__ float4 lerp(float4 a, float4 b, float t) {
+inline __device__ __host__ float4 mc_lerp(float4 a, float4 b, float t) {
     return a + t * (b - a);
 }