1 files changed, 1 insertions, 1 deletions
diff --git a/std/io/bufio.ts b/std/io/bufio.ts
index c0a52ac6a..fa0ba7e73 100644
--- a/std/io/bufio.ts
+++ b/std/io/bufio.ts
@@ -311,7 +311,7 @@ export class BufReader implements Reader {
    */
   async readSlice(delim: number): Promise<Uint8Array | Deno.EOF> {
     let s = 0; // search start index
-    let slice: Uint8Array;
+    let slice: Uint8Array | undefined;
 
     while (true) {
       // Search buffer.