diff --git a/test/appveyor.yml b/test/appveyor.yml
index e37adb6..67ddd6d 100644
--- a/test/appveyor.yml
+++ b/test/appveyor.yml
@@ -34,6 +34,7 @@ environment:
   matrix:
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
       TOOLSET: msvc-9.0,msvc-10.0,msvc-11.0,msvc-12.0
+      ADDRMD: 32
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
       TOOLSET: msvc-14.1,clang-win
       CXXSTD: 14,17