diff --git a/appveyor.yml b/appveyor.yml
index c1526c5..2d4fb4f 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -33,6 +33,7 @@ install:
         [System.IO.Compression.ZipFile]::ExtractToDirectory("C:\maven-bin.zip", "C:\maven")
       }
   - cmd: SET PATH=C:\maven\apache-maven-3.2.5\bin;%JAVA_HOME%\bin;%PATH%
+  - cmd: SET M2_HOME=C:\maven\apache-maven-3.2.5\
   - cmd: echo %PATH%
   - cmd: echo %JAVA_HOME%
   - cmd: echo %M2_HOME%