diff --git a/src/main/java/net/minestom/server/instance/palette/PaletteImpl.java b/src/main/java/net/minestom/server/instance/palette/PaletteImpl.java
index fdbc14e86..88be64f50 100644
--- a/src/main/java/net/minestom/server/instance/palette/PaletteImpl.java
+++ b/src/main/java/net/minestom/server/instance/palette/PaletteImpl.java
@@ -265,7 +265,7 @@ final class PaletteImpl implements Palette, Cloneable {
             final int newValue = function.apply(x, y, z, value);
             final int index = count.getPlain();
             count.setPlain(index + 1);
-            cache[index] = getPaletteIndex(newValue);
+            cache[index] = newValue != value ? getPaletteIndex(newValue) : value;
         });
         // Set values to final array
         count.setPlain(0);