diff --git a/libraries/bxdf/usd_preview_surface.mtlx b/libraries/bxdf/usd_preview_surface.mtlx
index 5b9ac546e1..916a7a746f 100644
--- a/libraries/bxdf/usd_preview_surface.mtlx
+++ b/libraries/bxdf/usd_preview_surface.mtlx
@@ -272,12 +272,12 @@
       <input name="low" type="float" value="0.00001" />
       <input name="high" type="float" value="1.0" />
     </clamp>
-    <ifgreater name="cutout_opacity" type="float">
+    <ifgreatereq name="cutout_opacity" type="float">
       <input name="value1" type="float" nodename="opacity_clamped" />
       <input name="value2" type="float" interfacename="opacityThreshold" />
       <input name="in1" type="float" value="1" />
       <input name="in2" type="float" value="0" />
-    </ifgreater>
+    </ifgreatereq>
     <surface name="surface_constructor" type="surfaceshader">
       <input name="bsdf" type="BSDF" nodename="coat_bsdf" />
       <input name="edf" type="EDF" nodename="emission_edf" />