diff --git a/appveyor.yml b/appveyor.yml
index 1b2f3991..05ce7a6c 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -9,8 +9,7 @@ environment:
     CMD_IN_ENV: "cmd /E:ON /V:ON /C .\\ci\\appveyor\\run_with_env.cmd"
 
   matrix:
-    - PYTHON: "C:\\Python27_64"
-      PYTHON_VERSION: "2.7"
+    - PYTHON_VERSION: "2.7"
       PYTHON_ARCH: "64"
       PANDAS_VERSION: "0.16.1"
       NUMPY_VERSION: "1.9.2"
@@ -40,22 +39,19 @@ environment:
       NUMPY_VERSION: "1.10.4"
       SCIPY_VERSION: "0.16.1"
 
-    - PYTHON: "C:\\Python27_64"
-      PYTHON_VERSION: "2.7"
+    - PYTHON_VERSION: "2.7"
       PYTHON_ARCH: "32"
       PANDAS_VERSION: "0.17.1"
       NUMPY_VERSION: "1.10.4"
       SCIPY_VERSION: "0.16.1"
 
-    - PYTHON: "C:\\Python34_64"
-      PYTHON_VERSION: "3.4"
+    - PYTHON_VERSION: "3.4"
       PYTHON_ARCH: "64"
       PANDAS_VERSION: "0.17.1"
       NUMPY_VERSION: "1.10.4"
       SCIPY_VERSION: "0.16.1"
 
-    - PYTHON: "C:\\Python34_64"
-      PYTHON_VERSION: "3.4"
+    - PYTHON_VERSION: "3.4"
       PYTHON_ARCH: "32"
       PANDAS_VERSION: "0.17.1"
       NUMPY_VERSION: "1.10.4"
@@ -87,6 +83,11 @@ install:
         Where-Object pullRequestId -eq $env:APPVEYOR_PULL_REQUEST_NUMBER)[0].buildNumber) { `
           throw "There are newer queued builds for this pull request, failing early." }
 
+  - ps: $NPY_VERSION_ARR=$env:NUMPY_VERSION -split '.', 0, 'simplematch'
+  - ps: $env:CONDA_NPY=$NPY_VERSION_ARR[0..1] -join ""
+  - ps: $PY_VERSION_ARR=$env:PYTHON_VERSION -split '.', 0, 'simplematch'
+  - ps: $env:CONDA_PY=$PY_VERSION_ARR[0..1] -join ""
+  - SET PYTHON=C:\Python%CONDA_PY%_64
   # Get cygwin's git out of our PATH.  See https://github.com/omnia-md/conda-dev-recipes/pull/16/files#diff-180360612c6b8c4ed830919bbb4dd459
   - "del C:\\cygwin\\bin\\git.exe"
   # this installs the appropriate Miniconda (Py2/Py3, 32/64 bit),
@@ -101,10 +102,6 @@ install:
   # https://blog.ionelmc.ro/2014/12/21/compiling-python-extensions-on-windows/ for 64bit C compilation
   - ps: copy .\ci\appveyor\vcvars64.bat "C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\bin\amd64"
 
-  - ps: $NPY_VERSION_ARR=$env:NUMPY_VERSION -split '.', 0, 'simplematch'
-  - ps: $env:CONDA_NPY=$NPY_VERSION_ARR[0..1] -join ""
-  - ps: $PY_VERSION_ARR=$env:PYTHON_VERSION -split '.', 0, 'simplematch'
-  - ps: $env:CONDA_PY=$PY_VERSION_ARR[0..1] -join ""
   - cmd: '%CMD_IN_ENV% conda build conda/bcolz --python=%CONDA_PY% --numpy=%CONDA_NPY%'
   - cmd: '%CMD_IN_ENV% conda build conda/cyordereddict --python=%CONDA_PY% --numpy=%CONDA_NPY%'
   - cmd: '%CMD_IN_ENV% conda build conda/logbook --python=%CONDA_PY% --numpy=%CONDA_NPY%'