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-rw-r--r--src/devices/sound/vgm_visualizer.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/devices/sound/vgm_visualizer.cpp b/src/devices/sound/vgm_visualizer.cpp
index f555c4523fe..3d4407d3822 100644
--- a/src/devices/sound/vgm_visualizer.cpp
+++ b/src/devices/sound/vgm_visualizer.cpp
@@ -326,7 +326,7 @@ void vgmviz_device::init_palette(palette_device &palette) const
double v = 1.0;
double c = s * v;
- double x = c * (1 - abs(fmod(h / 60.0, 2.0) - 1.0));
+ double x = c * (1 - fabs(fmod(h / 60.0, 2.0) - 1.0));
double m = v - c;
double rs = 0.0;
double gs = 0.0;