--- a/automation/taskcluster/graph/src/extend.js
+++ b/automation/taskcluster/graph/src/extend.js
@@ -376,17 +376,17 @@ async function scheduleFuzzing() {
 
   queue.scheduleTask(merge(base, {
     parent: task_build,
     name: "CertDN",
     command: [
       "/bin/bash",
       "-c",
       "bin/checkout.sh && nss/automation/taskcluster/scripts/fuzz.sh " +
-        "certDN nss/fuzz/corpus/quickder -max_total_time=300 -max_len=4096"
+        "certDN nss/fuzz/corpus/certDN -max_total_time=300 -max_len=4096"
     ],
     // Need a privileged docker container to remove detect_leaks=0.
     env: {
       ASAN_OPTIONS: "allocator_may_return_null=1:detect_leaks=0",
     },
     symbol: "CertDN",
     kind: "test"
   }));