diff --git a/packages/react-devtools-shared/src/devtools/views/Components/KeyValue.js b/packages/react-devtools-shared/src/devtools/views/Components/KeyValue.js
index ca2f623c1a4c1..ecfc3499795b5 100644
--- a/packages/react-devtools-shared/src/devtools/views/Components/KeyValue.js
+++ b/packages/react-devtools-shared/src/devtools/views/Components/KeyValue.js
@@ -255,6 +255,8 @@ export default function KeyValue({
       displayValue = 'null';
     } else if (value === undefined) {
       displayValue = 'undefined';
+    } else if (isNaN(value)) {
+      displayValue = 'NaN';
     }
 
     let shouldDisplayValueAsLink = false;