diff --git a/src/scene/materials/material.js b/src/scene/materials/material.js
index 7b7f5daa806..f81333a9176 100644
--- a/src/scene/materials/material.js
+++ b/src/scene/materials/material.js
@@ -728,6 +728,9 @@ class Material {
         return this.parameters;
     }
 
+    /**
+     * Clears all cached shader variants from the material and mesh instances that reference it.
+     */
     clearVariants() {
 
         // clear variants on the material