diff --git a/web/src/components/filter/CameraGroupSelector.tsx b/web/src/components/filter/CameraGroupSelector.tsx
index f6a5c5fdf..6f14b8eb9 100644
--- a/web/src/components/filter/CameraGroupSelector.tsx
+++ b/web/src/components/filter/CameraGroupSelector.tsx
@@ -551,6 +551,14 @@ export function CameraGroupEdit({
           message: "Camera group name already exists.",
         },
       )
+      .refine(
+        (value: string) => {
+          return !value.includes(".");
+        },
+        {
+          message: "Camera group name must not contain a period.",
+        },
+      )
       .refine((value: string) => value.toLowerCase() !== "default", {
         message: "Invalid camera group name.",
       }),
diff --git a/web/src/components/settings/ZoneEditPane.tsx b/web/src/components/settings/ZoneEditPane.tsx
index b80fa933e..f1c23c705 100644
--- a/web/src/components/settings/ZoneEditPane.tsx
+++ b/web/src/components/settings/ZoneEditPane.tsx
@@ -106,6 +106,14 @@ export default function ZoneEditPane({
         {
           message: "Zone name already exists on this camera.",
         },
+      )
+      .refine(
+        (value: string) => {
+          return !value.includes(".");
+        },
+        {
+          message: "Zone name must not contain a period.",
+        },
       ),
     inertia: z.coerce
       .number()