diff --git a/.appveyor.yml b/.appveyor.yml
index 4ae3daf9..9601fdb8 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -22,7 +22,7 @@ install:
 - cd ..
 
 before_build:
-- vcpkg/downloads/cmake-3.8.0-rc1-win32-x86/bin/cmake.exe -H. -Bbuild -G"Visual Studio 14 2015" -DSTATIC=%STATIC% -DSAMPLES=ON -DBENCHMARKS=ON -DCMAKE_TOOLCHAIN_FILE=vcpkg/scripts/buildsystems/vcpkg.cmake -DCMAKE_ROOT=vcpkg/downloads/cmake-3.8.0-rc1-win32-x86 -DCRYPTOPP_LIBRARY=vcpkg/installed/x86-windows/lib/cryptopp-static.lib
+- vcpkg\downloads\cmake-3.8.0-rc1-win32-x86\bin\cmake.exe -H. -Bbuild -G"Visual Studio 14 2015" -DSTATIC=%STATIC% -DSAMPLES=ON -DBENCHMARKS=ON -DCMAKE_TOOLCHAIN_FILE=vcpkg/scripts/buildsystems/vcpkg.cmake -DCMAKE_ROOT=vcpkg/downloads/cmake-3.8.0-rc1-win32-x86 -DCRYPTOPP_LIBRARY=vcpkg/installed/x86-windows/lib/cryptopp-static.lib
 
 build:
   project: build/tests/xlnt.test.sln