diff --git a/src/main/java/net/minestom/server/instance/light/BlockLight.java b/src/main/java/net/minestom/server/instance/light/BlockLight.java
index 1a8caa67b..a1cc22f64 100644
--- a/src/main/java/net/minestom/server/instance/light/BlockLight.java
+++ b/src/main/java/net/minestom/server/instance/light/BlockLight.java
@@ -11,6 +11,7 @@ import net.minestom.server.instance.block.BlockFace;
 import net.minestom.server.instance.palette.Palette;
 import org.jetbrains.annotations.ApiStatus;
 
+import java.util.Arrays;
 import java.util.HashSet;
 import java.util.Set;
 import java.util.concurrent.atomic.AtomicBoolean;
@@ -259,6 +260,8 @@ final class BlockLight implements Light {
         if (content1 == null) return content2;
         if (content2 == null) return content1;
 
+        if (Arrays.equals(content1, emptyContent) && Arrays.equals(content2, emptyContent)) return emptyContent;
+
         byte[] lightMax = new byte[LIGHT_LENGTH];
         for (int i = 0; i < content1.length; i++) {
             // Lower
diff --git a/src/main/java/net/minestom/server/instance/light/SkyLight.java b/src/main/java/net/minestom/server/instance/light/SkyLight.java
index 5663deb56..c569bca92 100644
--- a/src/main/java/net/minestom/server/instance/light/SkyLight.java
+++ b/src/main/java/net/minestom/server/instance/light/SkyLight.java
@@ -12,6 +12,7 @@ import net.minestom.server.instance.block.BlockFace;
 import net.minestom.server.instance.palette.Palette;
 import org.jetbrains.annotations.ApiStatus;
 
+import java.util.Arrays;
 import java.util.HashSet;
 import java.util.Set;
 import java.util.concurrent.atomic.AtomicBoolean;
@@ -288,6 +289,8 @@ final class SkyLight implements Light {
         if (content1 == null) return content2;
         if (content2 == null) return content1;
 
+        if (Arrays.equals(content1, emptyContent) && Arrays.equals(content2, emptyContent)) return emptyContent;
+
         byte[] lightMax = new byte[LIGHT_LENGTH];
         for (int i = 0; i < content1.length; i++) {
             // Lower