diff --git a/firmware/baseband/proc_capture.cpp b/firmware/baseband/proc_capture.cpp
index ad53acbf7..135738025 100644
--- a/firmware/baseband/proc_capture.cpp
+++ b/firmware/baseband/proc_capture.cpp
@@ -102,7 +102,7 @@ void CaptureProcessor::sample_rate_config(const SampleRateConfigMessage& message
     // waterfall runs slower. Reduce the update interval so it runs faster.
     // NB: Trade off: looks nicer, but more frequent updates == more CPU.
     if (sample_rate >= 1'500'000)
-        spectrum_interval_samples /= (sample_rate / 500'000);
+        spectrum_interval_samples /= (sample_rate / 750'000);
 
     // Mystery scalars for decimator configuration.
     // TODO: figure these out and add a real comment.