diff --git a/src/server/schemas/index.ts b/src/server/schemas/index.ts
index 9b9d3a7..aaad1a4 100644
--- a/src/server/schemas/index.ts
+++ b/src/server/schemas/index.ts
@@ -15,6 +15,10 @@ export const CreateLinkSchema = z.object({
     .url({
       message: "Please enter a valid URL. Include http:// or https://",
     })
+    .regex(/^(?!.*(?:http|https):\/\/(?:slug|slugr)\.vercel\.app).*$/, {
+      message: "You cannot redirect to the Slug url.",
+    })
+    // not contain any blank spaces
     .regex(/^\S+$/, {
       message: "URL must not contain any blank spaces.",
     }),
@@ -39,7 +43,16 @@ export const CreateLinkSchema = z.object({
 
 export const EditLinkSchema = z.object({
   id: z.string(),
-  url: z.string().min(1, { message: "URL is required." }),
+  url: z
+    .string()
+    .min(1, { message: "URL is required." })
+    .regex(/^(?!.*(?:http|https):\/\/(?:slug|slugr)\.vercel\.app).*$/, {
+      message: "You cannot redirect to the Slug url.",
+    })
+    // not contain any blank spaces
+    .regex(/^\S+$/, {
+      message: "URL must not contain any blank spaces.",
+    }),
   slug: z
     .string()
     .min(1, { message: "Short link is required." })