diff --git a/src/main/frontend/handler/file.cljs b/src/main/frontend/handler/file.cljs
index 6e5e0111e6..a2dc0b1236 100644
--- a/src/main/frontend/handler/file.cljs
+++ b/src/main/frontend/handler/file.cljs
@@ -132,11 +132,17 @@
   [repo-url file content]
   (let [electron-local-repo? (and (util/electron?)
                                   (config/local-db? repo-url))
+        ;; FIXME: store relative path in db
         file (cond
-               (and electron-local-repo? (util/win32?))
+               (and electron-local-repo?
+                    util/win32?
+                    (utils/win32 file))
                file
 
-               electron-local-repo?
+               (and electron-local-repo? util/win32?)
+               (str (config/get-repo-dir repo-url) "/" file)
+
+               (and electron-local-repo? (not= "/" (first file)))
                (str (config/get-repo-dir repo-url) "/" file)
 
                :else
diff --git a/src/main/frontend/utils.js b/src/main/frontend/utils.js
index 96ddb492ed..7580debd8f 100644
--- a/src/main/frontend/utils.js
+++ b/src/main/frontend/utils.js
@@ -192,3 +192,15 @@ export const reversePatch = patch => {
     length2: patchObj.length1
   }));
 };
+
+// Copied from https://github.com/sindresorhus/path-is-absolute/blob/main/index.js
+export const win32 = path => {
+  // https://github.com/nodejs/node/blob/b3fcc245fb25539909ef1d5eaa01dbf92e168633/lib/path.js#L56
+  var splitDeviceRe = /^([a-zA-Z]:|[\\/]{2}[^\\/]+[\\/]+[^\\/]+)?([\\/])?([\s\S]*?)$/;
+  var result = splitDeviceRe.exec(path);
+  var device = result[1] || '';
+  var isUnc = Boolean(device && device.charAt(1) !== ':');
+
+  // UNC paths are always absolute
+  return Boolean(result[2] || isUnc);
+}