diff --git a/scripts/caniuse.ts b/scripts/caniuse.ts
index ef4906fde3c..276efa50110 100644
--- a/scripts/caniuse.ts
+++ b/scripts/caniuse.ts
@@ -36,6 +36,9 @@ for (const [id, data] of Object.entries(features)) {
         if (!mapping.has(caniuseId)) {
             throw new Error(`Invalid caniuse ID used for ${id}: ${caniuseId}`);
         }
+        if(mapping.get(caniuseId)){
+            throw new Error(`Duplicate caniuse ID "${caniuseId}" used for "${id}" and "${mapping.get(caniuseId)}"`);
+        }
         if (hiddenCaniuseItems.has(caniuseId)) {
             throw new Error(`A caniuse ID used for "${id}" ("${caniuseId}") is hidden on caniuse.com`);
         }