diff --git a/src/main/java/me/jellysquid/mods/sodium/client/render/chunk/occlusion/OcclusionCuller.java b/src/main/java/me/jellysquid/mods/sodium/client/render/chunk/occlusion/OcclusionCuller.java
index 27f5803fcd..ca0e70270a 100644
--- a/src/main/java/me/jellysquid/mods/sodium/client/render/chunk/occlusion/OcclusionCuller.java
+++ b/src/main/java/me/jellysquid/mods/sodium/client/render/chunk/occlusion/OcclusionCuller.java
@@ -182,7 +182,8 @@ private static int nearestToZero(int min, int max) {
     private static final float CHUNK_SECTION_SIZE = 8.0f /* chunk bounds */ + 1.0f /* maximum model extent */ + 0.125f /* epsilon */;
 
     public static boolean isWithinFrustum(Viewport viewport, RenderSection section) {
-        return viewport.isBoxVisible(section.getCenterX(), section.getCenterY(), section.getCenterZ(), CHUNK_SECTION_SIZE);
+        return viewport.isBoxVisible(section.getCenterX(), section.getCenterY(), section.getCenterZ(),
+                CHUNK_SECTION_SIZE, CHUNK_SECTION_SIZE, CHUNK_SECTION_SIZE);
     }
 
     private void init(Visitor visitor,
diff --git a/src/main/java/me/jellysquid/mods/sodium/client/render/viewport/Viewport.java b/src/main/java/me/jellysquid/mods/sodium/client/render/viewport/Viewport.java
index 14834ebb6f..3bd7bceb39 100644
--- a/src/main/java/me/jellysquid/mods/sodium/client/render/viewport/Viewport.java
+++ b/src/main/java/me/jellysquid/mods/sodium/client/render/viewport/Viewport.java
@@ -25,19 +25,19 @@ public Viewport(Frustum frustum, Vector3d position) {
         this.blockCoords = BlockPos.ofFloored(position.x, position.y, position.z);
     }
 
-    public boolean isBoxVisible(int intX, int intY, int intZ, float radius) {
-        float floatX = (intX - this.transform.intX) - this.transform.fracX;
-        float floatY = (intY - this.transform.intY) - this.transform.fracY;
-        float floatZ = (intZ - this.transform.intZ) - this.transform.fracZ;
+    public boolean isBoxVisible(int intOriginX, int intOriginY, int intOriginZ, float floatSizeX, float floatSizeY, float floatSizeZ) {
+        float floatOriginX = (intOriginX - this.transform.intX) - this.transform.fracX;
+        float floatOriginY = (intOriginY - this.transform.intY) - this.transform.fracY;
+        float floatOriginZ = (intOriginZ - this.transform.intZ) - this.transform.fracZ;
 
         return this.frustum.testAab(
-                floatX - radius,
-                floatY - radius,
-                floatZ - radius,
+                floatOriginX - floatSizeX,
+                floatOriginY - floatSizeY,
+                floatOriginZ - floatSizeZ,
 
-                floatX + radius,
-                floatY + radius,
-                floatZ + radius
+                floatOriginX + floatSizeX,
+                floatOriginY + floatSizeY,
+                floatOriginZ + floatSizeZ
         );
     }