diff --git a/src/components/editor/faultTree/shapes/RenderTree.tsx b/src/components/editor/faultTree/shapes/RenderTree.tsx
index d350409c..469b0c6a 100644
--- a/src/components/editor/faultTree/shapes/RenderTree.tsx
+++ b/src/components/editor/faultTree/shapes/RenderTree.tsx
@@ -82,9 +82,14 @@ const renderTree = async (container, node, parentShape = null, pathsToHighlight,
     }
   }
 
-  if (has(node, "probabilityRequirement")) {
-    nodeShape.attr(["probabilityRequirementLabel", "text"], node.probabilityRequirement.toExponential(2));
+  const probReqValue =
+    (isReferencedNode(node) && node.supertypes?.hasFailureRate?.requirement?.upperBound?.toExponential(2)) ||
+    (has(node, "probabilityRequirement") && node.probabilityRequirement.toExponential(2));
+
+  if (probReqValue) {
+    nodeShape.attr(["probabilityRequirementLabel", "text"], probReqValue);
   }
+
   if (shouldHighlight) {
     nodeShape.attr("body/stroke", ERROR_PATH_COLOR);
     nodeShape.attr("body/fill", ERROR_PATH_COLOR);
diff --git a/src/components/editor/faultTree/shapes/shapesDefinitions.tsx b/src/components/editor/faultTree/shapes/shapesDefinitions.tsx
index c8d2efc8..13daaeb5 100644
--- a/src/components/editor/faultTree/shapes/shapesDefinitions.tsx
+++ b/src/components/editor/faultTree/shapes/shapesDefinitions.tsx
@@ -183,6 +183,10 @@ export const ExternalEvent = Event.define(
         },
         refY2: -20,
       },
+      probabilityRequirementLabel: {
+        fontSize: 16,
+        refX: "120%",
+      },
       gate: {
         d: "M -15 -16 L 0 -30 L 15 -16 L 15 0 L -15 0 Z M 0 -30 L 0 -59",
         stroke: STROKE_COLOR,