diff --git a/src/gfx/map.rs b/src/gfx/map.rs
index bb53fbe..4b15738 100644
--- a/src/gfx/map.rs
+++ b/src/gfx/map.rs
@@ -460,10 +460,10 @@ impl MapRender {
             meshgen_threads.push(std::thread::spawn(move || {
                 let mut buffer_cap = 0;
                 let info = info.deref();
-                let mut nodes_by_name = HashMap::<String, NodeDef>::new();
-                for def in &info.nodes {
+                let mut nodes_by_name = HashMap::<String, u16>::new();
+                for (i, def) in info.nodes.iter().enumerate() {
                     if let Some(def) = def {
-                        nodes_by_name.insert(def.name.clone(), *def.clone());
+                        nodes_by_name.insert(def.name.clone(), i as u16);
                     } else {
                         break;
                     }
diff --git a/src/gfx/map/mesh.rs b/src/gfx/map/mesh.rs
index 5e3e8ca..db52320 100644
--- a/src/gfx/map/mesh.rs
+++ b/src/gfx/map/mesh.rs
@@ -24,7 +24,7 @@ impl MeshData {
 
 pub(super) fn create_mesh(
     mkinfo: &MeshgenInfo,
-    nodes_by_name: &HashMap<String, NodeDef>,
+    nodes_by_name: &HashMap<String, u16>,
     settings: &MapRenderSettings,
     _pos: Point3<i16>,
     block: &MapBlock,
@@ -75,9 +75,7 @@ pub(super) fn create_mesh(
         let pos: [i16; 3] = array(|i| ((index >> (4 * i)) & 0xf) as i16);
 
         for (f, face) in CUBE.iter().enumerate() {
-            if draw_type == DrawType::Cube
-                || draw_type == DrawType::Liquid
-            {
+            if draw_type == DrawType::Cube || draw_type == DrawType::Liquid {
                 let c = [1, 1, 0, 0, 2, 2][f];
 
                 let mut nblk = block;
@@ -101,7 +99,11 @@ pub(super) fn create_mesh(
                         DrawType::Cube => ndef.draw_type == DrawType::Cube,
                         DrawType::Liquid => {
                             // println!("alternate flowing name: {:?}", &ndef.flowing_alt);
-                            let alternate = nodes_by_name.get(&ndef.flowing_alt);
+                            let alt_id = nodes_by_name.get(&ndef.flowing_alt);
+                            let mut alt_def = None;
+                            if let Some(alt_id) = alt_id {
+                                alt_def = Some(mkinfo.nodes.as_ref()[*alt_id as usize].as_ref().unwrap());
+                            }
                             // println!("alternate flowing: {:?}", alternate);
                             ndef.draw_type == DrawType::Cube || ncontent == content
                         }