diff --git a/.appveyor.yml b/.appveyor.yml
index 6b5c09e3..71c40326 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -27,7 +27,7 @@ branches:
 environment:
   matrix:
     - TOOLSET_PATH: C:\Qt\5.8\mingw53_32\bin;C:\mingw-w64\i686-6.3.0-posix-dwarf-rt_v5-rev1\mingw32\bin
-      BOOST_FLAGS: toolset=gcc --layout=system variant=release address-model=64
+      BOOST_FLAGS: toolset=gcc --layout=system variant=release address-model=32
       BUILD_COMMAND: mingw32-make -j2
 
     - TOOLSET_PATH: C:\Qt\5.8\msvc2015_64\bin