diff --git a/Meter.c b/Meter.c
index 706196dddcbab77b8c55f451eebf0ba6e11ed76b..8a18d86cf2e23adc943b3a4f44b318b92fe4d6ba 100644
--- a/Meter.c
+++ b/Meter.c
@@ -406,8 +406,8 @@ static void GraphMeterMode_draw(Meter* this, int x, int y, int w) {
    }
    for (; i < nValues; i+=2, k++) {
       int pix = GraphMeterMode_pixPerRow * GRAPH_HEIGHT;
-      int v1 = CLAMP(data->values[i] * pix, 1, pix);
-      int v2 = CLAMP(data->values[i+1] * pix, 1, pix);
+      int v1 = CLAMP((int) lround(data->values[i] * pix), 1, pix);
+      int v2 = CLAMP((int) lround(data->values[i+1] * pix), 1, pix);
 
       int colorIdx = GRAPH_1;
       for (int line = 0; line < GRAPH_HEIGHT; line++) {