diff --git a/app/spectrum.c b/app/spectrum.c
index b1b4826..602e06c 100644
--- a/app/spectrum.c
+++ b/app/spectrum.c
@@ -871,8 +871,11 @@ uint8_t Rssi2Y(uint16_t rssi)
     static void DrawSpectrum()
     {
         uint16_t steps = GetStepsCount();
+        // for larger numbers of samples, max at 128 to correctly draw
         uint8_t bars = (steps > 128) ? 128 : steps;
-        uint8_t shift_graph = 64 / steps + 1; // to center bar on freq marker
+        // to center bar on freq marker
+        uint8_t shift_graph = 64 / steps + 1;
+
         uint8_t ox = 0;
         for (uint8_t i = 0; i < 128; ++i)
         {