diff --git a/src/Mass/Mass.h b/src/Mass/Mass.h
index e0a7265..538861c 100644
--- a/src/Mass/Mass.h
+++ b/src/Mass/Mass.h
@@ -48,6 +48,7 @@ struct CustomStyle {
     Color4 colour{0.0f};
     Float metallic = 0.0f;
     Float gloss = 0.0f;
+    bool glow = false;
 
     Int patternId = 0;
     Float opacity = 0.0f;