diff --git a/.github/scripts/common.py b/.github/scripts/common.py
index fb5c7adc..d85dd8b8 100644
--- a/.github/scripts/common.py
+++ b/.github/scripts/common.py
@@ -46,8 +46,10 @@ def get_build_dir(config) -> Path:
 TMP_DIR = Path(os.getenv("TMP_DIR", default_tmp_dir))
 if platform.system() == "Windows":
     KBUILD_SOURCE_DIR = Path(_environ["GITHUB_WORKSPACE"])
+    BIN_EXT = ".exe"
 else:
     KBUILD_SOURCE_DIR = HOME / "kiwix-build"
+    BIN_EXT = ".exe" if COMPILE_CONFIG.startswith("win32_") else ""
 
 
 _ref = _environ.get("GITHUB_REF", "").split("/")[-1]
@@ -62,8 +64,6 @@ def get_build_dir(config) -> Path:
 FLATPAK_HTTP_GIT_REMOTE = "https://github.com/flathub/org.kiwix.desktop.git"
 FLATPAK_GIT_REMOTE = "git@github.com:flathub/org.kiwix.desktop.git"
 
-BIN_EXT = ".exe" if COMPILE_CONFIG.startswith("win32_") else ""
-
 
 def major_version(version: str) -> str:
     return version.split(".")[0]