diff --git a/CHANGELOG.md b/CHANGELOG.md
index ae7918fc..f939fc10 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 All notable changes to this project will be documented in this file.
 
+## [0.8.1] - 2025-05-29
+
+Fixed error with buffer files.
+
 ## [0.8.0] - 2025-05-29
 
 ### Added
diff --git a/package.json b/package.json
index 4a23ba81..eee45596 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
         "Tact",
         "Smart contract"
     ],
-    "version": "0.8.0",
+    "version": "0.8.1",
     "engines": {
         "vscode": "^1.63.0"
     },
diff --git a/package.server.json b/package.server.json
index d3af8e80..60f2eda3 100644
--- a/package.server.json
+++ b/package.server.json
@@ -1,6 +1,6 @@
 {
     "name": "@tact-lang/tact-language-server",
-    "version": "0.8.0",
+    "version": "0.8.1",
     "description": "Language Server for Tact",
     "main": "server.js",
     "keywords": ["TON", "The Open Network", "Tact", "Smart contract", "language server"],
diff --git a/server/src/files.ts b/server/src/files.ts
index c5a2432c..3348f1b6 100644
--- a/server/src/files.ts
+++ b/server/src/files.ts
@@ -1,11 +1,12 @@
 import * as lsp from "vscode-languageserver"
 import {TextDocument} from "vscode-languageserver-textdocument"
 import {TactFile} from "@server/languages/tact/psi/TactFile"
-import {fileURLToPath, pathToFileURL} from "node:url"
+import {pathToFileURL} from "node:url"
 import {createFiftParser, createTactParser, createTlbParser} from "@server/parser"
 import * as fs from "node:fs"
 import {FiftFile} from "@server/languages/fift/psi/FiftFile"
 import {TlbFile} from "@server/languages/tlb/psi/TlbFile"
+import {URI} from "vscode-uri"
 
 export const PARSED_FILES_CACHE: Map<string, TactFile> = new Map()
 export const FIFT_PARSED_FILES_CACHE: Map<string, FiftFile> = new Map()
@@ -38,11 +39,6 @@ export function reparseTactFile(uri: string, content: string): TactFile {
     return file
 }
 
-export const filePathToUri = (filePath: string): string => {
-    const url = pathToFileURL(filePath).toString()
-    return url.replace(/c:/g, "c%3A").replace(/d:/g, "d%3A")
-}
-
 export function findFiftFile(uri: string): FiftFile {
     const cached = FIFT_PARSED_FILES_CACHE.get(uri)
     if (cached !== undefined) {
@@ -119,3 +115,13 @@ export const isTlbFile = (
     uri: string,
     event?: lsp.TextDocumentChangeEvent<TextDocument>,
 ): boolean => event?.document.languageId === "tlb" || uri.endsWith(".tlb")
+
+export const filePathToUri = (filePath: string): string => {
+    const url = pathToFileURL(filePath).toString()
+    return url.replace(/c:/g, "c%3A").replace(/d:/g, "d%3A")
+}
+
+function fileURLToPath(uri: string): string {
+    const normalizedUri = uri.replace(/\\/g, "/")
+    return URI.parse(normalizedUri).fsPath
+}