diff --git a/appveyor.yml b/appveyor.yml
index e2bc47ee3..990d64196 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -37,8 +37,8 @@ install:
   - if [%COMPILER%]==[clang-cl] conda install --yes clangdev ninja cmake
   - if [%COMPILER%]==[clang-cl] call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" amd64
   
-  - ps: cp C:\Miniconda36-x64\Library\lib\*.lib \C:\Program Files (x86)\Windows Kits\10\Lib\10.0.10586.0\um\x64
-  - ps: cp C:\Miniconda36-x64\Library\lib\*.lib  C:\Program Files (x86)\Windows Kits\10\Lib\10.0.14393.0\um\x64
+  - ps: cp C:\Miniconda36-x64\Library\lib\*.lib "C:\Program Files (x86)\Windows Kits\10\Lib\10.0.10586.0\um\x64"
+  - ps: cp C:\Miniconda36-x64\Library\lib\*.lib "C:\Program Files (x86)\Windows Kits\10\Lib\10.0.14393.0\um\x64"
   
   - if [%COMPILER%]==[flang] call C:\Miniconda36-x64\Scripts\activate.bat
   - if [%COMPILER%]==[flang] conda config --add channels conda-forge --force