diff --git a/appveyor.yml b/appveyor.yml
index d5f09249..5d8d3bec 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -130,8 +130,10 @@ install:
     - appveyor DownloadFile http://github.com/OpenCppCoverage/OpenCppCoverage/releases/download/release-0.9.6.1/OpenCppCoverageSetup-x64-0.9.6.1.exe
     - OpenCppCoverageSetup-x64-0.9.6.1.exe /VERYSILENT
     - ps: ls "c:\Program Files"
-    - "C:\\Program Files\\OpenCppCoverage\\OpenCppCoverage.exe"
-        
+    - set CPPCOVER="C:\\Program Files\\OpenCppCoverage"
+    - set PATH=%CPPCOVER%;%PATH%
+    - OpenCppCoverage.exe
+    
 build_script:
     - '"C:\\Program Files (x86)\\Microsoft Visual Studio %PHP_VC%.0\\VC\\vcvarsall.bat" %BUILD_PLATFORM%'
     - Echo copy msphp code to ext folder