diff --git a/src/main/java/com/moulberry/axiom/marker/MarkerData.java b/src/main/java/com/moulberry/axiom/marker/MarkerData.java
index 8ff57b2..93d8db6 100644
--- a/src/main/java/com/moulberry/axiom/marker/MarkerData.java
+++ b/src/main/java/com/moulberry/axiom/marker/MarkerData.java
@@ -75,7 +75,7 @@ public record MarkerData(UUID uuid, Vec3 position, @Nullable String name, @Nulla
                 friendlyByteBuf.writeInt(markerData.lineArgb);
             }
 
-            if (markerData.lineArgb != 0) {
+            if (markerData.lineThickness != 0) {
                 friendlyByteBuf.writeFloat(markerData.lineThickness);
             }