diff --git a/appveyor.yml b/appveyor.yml
index fa8e256a0..3cf5a02bf 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -47,6 +47,7 @@ environment:
     # B2_LINK: link=shared,static
     # B2_THREADING: threading=multi,single
     B2_VARIANT: variant=release,debug
+    B2_CI_VERSION: 0
 
   matrix:
     - FLAVOR: Visual Studio 2017 C++2a Strict