diff --git a/common/src/terrain/structure.rs b/common/src/terrain/structure.rs
index 0154b01aad..0f70b37fbe 100644
--- a/common/src/terrain/structure.rs
+++ b/common/src/terrain/structure.rs
@@ -16,6 +16,7 @@ pub enum StructureBlock {
     Acacia,
     PalmLeaves,
     Water,
+    GreenSludge,
     Fruit,
     Hollow,
     Block(Block),
@@ -98,6 +99,7 @@ impl Asset for Structure {
                     2 => StructureBlock::PalmLeaves,
                     3 => StructureBlock::Water,
                     4 => StructureBlock::Acacia,
+                    6 => StructureBlock::GreenSludge,
                     7 => StructureBlock::Fruit,
                     15 => StructureBlock::Hollow,
                     index => {
diff --git a/world/src/block/mod.rs b/world/src/block/mod.rs
index bf6f2b33ec..7b1dcd6123 100644
--- a/world/src/block/mod.rs
+++ b/world/src/block/mod.rs
@@ -466,6 +466,7 @@ fn block_from_structure(
                 .map(|e| e as u8),
         )),
         StructureBlock::Water => Some(Block::new(BlockKind::Water, Rgb::new(100, 150, 255))),
+        StructureBlock::GreenSludge => Some(Block::new(BlockKind::Water, Rgb::new(30, 126, 23))),
         StructureBlock::Acacia => Some(Block::new(
             BlockKind::Normal,
             Lerp::lerp(Rgb::new(35.0, 156.0, 0.0), Rgb::new(62.0, 208.0, 0.0), lerp)