diff --git a/ui/src/pages/certificates/CertificateList.tsx b/ui/src/pages/certificates/CertificateList.tsx
index 10e8d509..3425f3d8 100644
--- a/ui/src/pages/certificates/CertificateList.tsx
+++ b/ui/src/pages/certificates/CertificateList.tsx
@@ -238,7 +238,7 @@ const CertificateList = () => {
     () => {
       const { columnKey: sorterKey, order: sorterOrder } = sorter;
       let sort: string | undefined;
-      sort = sorterKey === "validity" ? "validityNotAfter" : "";
+      sort = sorterKey === "validity" ? "validityNotAfter" : void 0;
       sort = sort && (sorterOrder === "ascend" ? `${sort}` : sorterOrder === "descend" ? `-${sort}` : void 0);
 
       return listCertificates({
diff --git a/ui/src/pages/workflows/WorkflowList.tsx b/ui/src/pages/workflows/WorkflowList.tsx
index c8a4f82b..ec19e841 100644
--- a/ui/src/pages/workflows/WorkflowList.tsx
+++ b/ui/src/pages/workflows/WorkflowList.tsx
@@ -235,7 +235,7 @@ const WorkflowList = () => {
     () => {
       const { columnKey: sorterKey, order: sorterOrder } = sorter;
       let sort: string | undefined;
-      sort = sorterKey === "lastRun" ? "lastRunTime" : "";
+      sort = sorterKey === "lastRun" ? "lastRunTime" : void 0;
       sort = sort && (sorterOrder === "ascend" ? `${sort}` : sorterOrder === "descend" ? `-${sort}` : void 0);
 
       return listWorkflows({
diff --git a/ui/src/repository/certificate.ts b/ui/src/repository/certificate.ts
index 9c0b4708..a355b8b3 100644
--- a/ui/src/repository/certificate.ts
+++ b/ui/src/repository/certificate.ts
@@ -55,7 +55,7 @@ export const list = async ({
     expand: ["workflowRef"].join(","),
     fields: [..._commonFields, ..._expandFields].join(","),
     filter: filters.join(" && "),
-    sort: sort,
+    sort: sort || "-created",
     requestKey: null,
   });
 };
diff --git a/ui/src/repository/workflow.ts b/ui/src/repository/workflow.ts
index 947928ac..87bf101b 100644
--- a/ui/src/repository/workflow.ts
+++ b/ui/src/repository/workflow.ts
@@ -57,7 +57,7 @@ export const list = async ({
     expand: expand ? ["lastRunRef"].join(",") : void 0,
     fields: [..._commonFields, ..._expandFields].join(","),
     filter: filters.join(" && "),
-    sort: sort,
+    sort: sort || "-created",
     requestKey: null,
   });
 };