diff --git a/src/main/java/com/jozufozu/flywheel/backend/material/MaterialGroupImpl.java b/src/main/java/com/jozufozu/flywheel/backend/material/MaterialGroupImpl.java
index 504b3fcd2..0952c9c21 100644
--- a/src/main/java/com/jozufozu/flywheel/backend/material/MaterialGroupImpl.java
+++ b/src/main/java/com/jozufozu/flywheel/backend/material/MaterialGroupImpl.java
@@ -46,8 +46,6 @@ public class MaterialGroupImpl<P extends WorldProgram> implements MaterialGroup
 	public void render(Matrix4f viewProjection, double camX, double camY, double camZ) {
 		for (MaterialRenderer<P> renderer : renderers) {
 			renderer.render(viewProjection, camX, camY, camZ);
-
-			GlError.pollAndThrow(renderer.material.spec.name::toString);
 		}
 	}
 
diff --git a/src/main/java/com/jozufozu/flywheel/light/GPULightVolume.java b/src/main/java/com/jozufozu/flywheel/light/GPULightVolume.java
index 48ee19f44..620a9428e 100644
--- a/src/main/java/com/jozufozu/flywheel/light/GPULightVolume.java
+++ b/src/main/java/com/jozufozu/flywheel/light/GPULightVolume.java
@@ -36,6 +36,7 @@ public class GPULightVolume extends LightVolume {
 	private final GlTexture glTexture;
 
 	private final RGPixelFormat pixelFormat;
+	private final GlTextureUnit textureUnit = GlTextureUnit.T4;
 	protected boolean bufferDirty;
 
 	public GPULightVolume(ImmutableBox sampleVolume) {
@@ -70,7 +71,7 @@ public class GPULightVolume extends LightVolume {
 		// just in case something goes wrong, or we accidentally call this before this volume is properly disposed of.
 		if (lightData == null) return;
 
-		GlTextureUnit.T4.makeActive();
+		textureUnit.makeActive();
 		glTexture.bind();
 		glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 		glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);