diff --git a/build.py b/build.py
index a2b823a..96cc0ef 100644
--- a/build.py
+++ b/build.py
@@ -23,7 +23,9 @@ def build(build: bool = True, copy: bool = True, test: bool = False, dest: str |
         if test:
             print("Building Windows test one-file bundle with PyInstaller")
             # On Windows use ';' as add-data separator (src;dest)
-            add_data_args = ["--add-data", "icon;icon"]
+            # Use absolute path for the icon folder so PyInstaller can find it
+            icon_src = str(project_root / "icon")
+            add_data_args = ["--add-data", f"{icon_src};icon"]
 
             # Try to include dicognito package data (release_notes.md) which
             # PyInstaller may miss. This prevents runtime FileNotFoundError for
diff --git a/nice_uploader.spec b/nice_uploader.spec
index 801c014..b2a9751 100644
--- a/nice_uploader.spec
+++ b/nice_uploader.spec
@@ -1,11 +1,16 @@
 # -*- mode: python ; coding: utf-8 -*-
 
+import os
+from pathlib import Path
+
+here = Path(__file__).resolve().parent
+project_root = here
 
 a = Analysis(
     ['nice.py'],
-    pathex=[],
+    pathex=[str(project_root)],
     binaries=[],
-    datas=[('icon', 'icon'), ('icon/icon1.png', 'icon')],
+    datas=[(str(project_root / 'icon'), 'icon'), (str(project_root / 'icon' / 'icon1.png'), 'icon')],
     hiddenimports=['bs4', 'requests', 'nicegui', 'pynng'],
     hookspath=[],
     hooksconfig={},