diff --git a/appveyor.yml b/appveyor.yml
index 3391967..9b58e9f 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -19,15 +19,16 @@ environment:
       ADDRMD: 32
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
       TOOLSET: msvc-12.0,msvc-14.0
-      ADDRMD: 32,64
+      # Boost.Python doesn't link on 64 without extra configuration
+      ADDRMD: 32
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
       TOOLSET: msvc-14.1
       CXXSTD: 14,17
-      ADDRMD: 32,64
+      ADDRMD: 32
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
       TOOLSET: msvc-14.2
       CXXSTD: 14,17,latest
-      ADDRMD: 32,64
+      ADDRMD: 32
 
 install:
   - set BOOST_BRANCH=develop