diff --git a/core/src/main/java/hudson/maven/MavenBuild.java b/core/src/main/java/hudson/maven/MavenBuild.java
index b6b9d47a446c0ff28ad3f7c955eda2ebc072ba73..d08ed070185ce2f0fdb74ddcb5b54e271e945434 100644
--- a/core/src/main/java/hudson/maven/MavenBuild.java
+++ b/core/src/main/java/hudson/maven/MavenBuild.java
@@ -283,7 +283,7 @@ public class MavenBuild extends AbstractBuild<MavenModule,MavenBuild> {
          */
         public Channel newProcess(BuildListener listener, OutputStream out) throws IOException, InterruptedException {
             return launcher.launchChannel(buildMavenCmdLine(listener).toCommandArray(),
-                out, getProject().getParent().getModuleRoot(), getEnvVars());
+                out, null, getEnvVars());
         }
 
         /**