diff --git a/src/pe/raytracing/Color.cpp b/src/pe/raytracing/Color.cpp
index 6d0b32dbc1052e2060a820e4d3554522078998a2..c07f33a281fa313c5a9bd91bd7bdef4268d02630 100644
--- a/src/pe/raytracing/Color.cpp
+++ b/src/pe/raytracing/Color.cpp
@@ -36,7 +36,7 @@ Color Color::colorFromHSV(real_t hue, real_t saturation, real_t value) {
    } else {
       hue /= real_t(60);
    }
-   real_t fract = hue - floor(hue);
+   real_t fract = hue - std::floor(hue);
    
    real_t P = value*(real_t(1) - saturation);
    real_t Q = value*(real_t(1) - saturation*fract);