diff --git a/index.html b/index.html
index af5fee9..42129d1 100644
--- a/index.html
+++ b/index.html
@@ -119,7 +119,7 @@ A Voronoi diagram is supposed to be here but for some reason it cannot be displa
 	<input id="inputNoiseHeatOctaves" type="number" value="3" step="1" min="1" max="65535" size="10">
 
 	<label for="inputNoiseHeatPersistence">Persistence:&nbsp;</label>
-	<input id="inputNoiseHeatPersistence" type="number" value="0.5" step=0.1 size="10" min="-1e7" max="1e7">
+	<input id="inputNoiseHeatPersistence" type="number" value="0.5" step=0.01 size="10" min="-1e7" max="1e7">
 
 	<h3>Humidity (<code>mg_biome_np_humidity</code>)</h3>
 	<label for="inputNoiseHumidityOffset">Offset:&nbsp;</label>
@@ -132,7 +132,7 @@ A Voronoi diagram is supposed to be here but for some reason it cannot be displa
 	<input id="inputNoiseHumidityOctaves" type="number" value="3" step="1" min="1" max="65535" size="10">
 
 	<label for="inputNoiseHumidityPersistence">Persistence:&nbsp;</label>
-	<input id="inputNoiseHumidityPersistence" type="number" value="0.5" step=0.1 size="10" min="-1e7" max="1e7">
+	<input id="inputNoiseHumidityPersistence" type="number" value="0.5" step=0.01 size="10" min="-1e7" max="1e7">
 
 	<h3>Reset</h3>
 	<button id="inputNoiseReset" type="button">Reset noise parameters</button>