diff --git a/appveyor.yml b/appveyor.yml
index 0c0c7b102..ef5f1667e 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -83,7 +83,7 @@ deploy:
   symbol_server: https://www.myget.org/F/discord-net/symbols/api/v2/package
   on:
     branch: dev
-    isWindows: True
+    CI_WINDOWS: true
 - provider: NuGet
   server: https://www.myget.org/F/rogueexception/api/v2/package
   api_key:
@@ -91,4 +91,4 @@ deploy:
   symbol_server: https://www.myget.org/F/rogueexception/symbols/api/v2/package
   on:
     branch: dev
-    isWindows: True
+    CI_WINDOWS: true