diff --git a/src/webgpu/api/validation/capability_checks/limits/limit_utils.ts b/src/webgpu/api/validation/capability_checks/limits/limit_utils.ts
index 8ab31f04b9d..3f72b90901e 100644
--- a/src/webgpu/api/validation/capability_checks/limits/limit_utils.ts
+++ b/src/webgpu/api/validation/capability_checks/limits/limit_utils.ts
@@ -417,10 +417,12 @@ export class LimitTestsImpl extends GPUTestBase {
     if (extraLimits) {
       for (const [extraLimitStr, limitMode] of Object.entries(extraLimits)) {
         const extraLimit = extraLimitStr as GPUSupportedLimit;
-        requiredLimits[extraLimit] =
-          limitMode === 'defaultLimit'
-            ? getDefaultLimitForAdapter(adapter, extraLimit)
-            : (adapter.limits[extraLimit] as number);
+        if (adapter.limits[extraLimit] !== undefined) {
+          requiredLimits[extraLimit] =
+            limitMode === 'defaultLimit'
+              ? getDefaultLimitForAdapter(adapter, extraLimit)
+              : (adapter.limits[extraLimit] as number);
+        }
       }
     }