diff --git a/index.ts b/index.ts
index 6f58a83..ee0fae1 100644
--- a/index.ts
+++ b/index.ts
@@ -201,10 +201,12 @@ type EnvReturn<
 
 type RuntimeOptions<
   TPrefix extends string,
+  TShared extends Record<string, ZodType>,
   TClient extends Record<string, ZodType>,
   TServer extends Record<string, ZodType>
 > = {
   runtimeEnv: Record<
+    | keyof TShared
     | {
         [TKey in keyof TClient]: TKey extends `${TPrefix}${string}`
           ? TKey
@@ -349,7 +351,7 @@ type EnvOptions<
       Impossible<TransformOptions<never, never, never>> &
       Impossible<FeatureFlagsOptions<never, never, never, never, never>>)
 ) &
-  RuntimeOptions<TPrefix, TClient, TServer> &
+  RuntimeOptions<TPrefix, TShared, TClient, TServer> &
   CommonOptions<TShared>;
 
 export function createEnv<
diff --git a/test/index.test.ts b/test/index.test.ts
index c297b0a..9c16357 100644
--- a/test/index.test.ts
+++ b/test/index.test.ts
@@ -150,6 +150,26 @@ describe("createEnv", () => {
   });
 
   describe.skip("types", () => {
+    it("should fail when runtimeEnv doesn't contain shared keys", () => {
+      createEnv({
+        isServer: true,
+        clientPrefix: "PREFIX_" as const,
+        client: {
+          PREFIX_TEST: z.string(),
+        },
+        shared: {
+          SUT: z.string(),
+        },
+        server: {
+          TEST: z.string(),
+        },
+        // @ts-expect-error
+        runtimeEnv: {
+          PREFIX_TEST: "",
+        },
+      });
+    });
+
     it("Should fail when server env contain client prefixed env", () => {
       createEnv({
         isServer: true,