diff --git a/appveyor.yml b/appveyor.yml
index 0f9fdf5..46d6aec 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -9,13 +9,13 @@ platform:
 - x64
 build:
   verbosity: detailed
-environment:
-    BUILD_VERSION: '%APPVEYOR_BUILD_VERSION%-%APPVEYOR_REPO_COMMIT:~0,8%'
-    BUILD_VERSION_COMMA_SEP: '%APPVEYOR_BUILD_VERSION:.=,%'
-    BUILD_ZIPFILE: '%APPVEYOR_BUILD_FOLDER%\%APPVEYOR_PROJECT_NAME%_v%BUILD_VERSION%_%PLATFORM%.zip'
 before_build:
 - cmd: >-
-    echo %BUILD_VERSION% ............ %BUILD_VERSION_COMMA_SEP%
+    set "BUILD_VERSION=%APPVEYOR_BUILD_VERSION%-%APPVEYOR_REPO_COMMIT:~0,8%"
+
+    set "BUILD_VERSION_COMMA_SEP=%APPVEYOR_BUILD_VERSION:.=,%"
+
+    set "BUILD_ZIPFILE=%APPVEYOR_BUILD_FOLDER%\%APPVEYOR_PROJECT_NAME%_v%BUILD_VERSION%_%PLATFORM%.zip"
 
 after_build:
 - cmd: >-