diff --git a/src/compat.ts b/src/compat.ts
index 5e9cb0de..34ec0f28 100644
--- a/src/compat.ts
+++ b/src/compat.ts
@@ -319,7 +319,7 @@ class Socket extends EventEmitter {
         }
       }
     } catch (err) {
-      if (!this._socket.closed && err.code !== "EBUSY") {
+      if (!this._socket.closed && (err as {code?: string}).code !== "EBUSY") {
         process.nextTick(() => this.emit("error", err))
       }
     }
@@ -340,7 +340,7 @@ class Socket extends EventEmitter {
         if (cb) cb()
       } catch (err) {
         if (cb) {
-          cb(err)
+          cb(err as Error)
         } else {
           this.emit("error", err)
         }
diff --git a/src/index.ts b/src/index.ts
index d38dcc74..8ba60008 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -290,7 +290,7 @@ function asyncIterator<T extends SocketLikeIterable<U>, U>(this: T) {
       try {
         return {value: await this.receive(), done: false}
       } catch (err) {
-        if (this.closed && err.code === "EAGAIN") {
+        if (this.closed && (err as {code?: string}).code === "EAGAIN") {
           /* Cast so we can omit 'value: undefined'. */
           return {done: true} as IteratorReturnResult<undefined>
         } else {