diff --git a/master/master.cfg b/master/master.cfg
index 27540edbf..7f0b1da72 100644
--- a/master/master.cfg
+++ b/master/master.cfg
@@ -134,7 +134,8 @@ class UnixBuild(TaggedBuildFactory):
     test_timeout = None
 
     def setup(self, parallel, test_with_PTY=False, **kwargs):
-        self.addStep(Configure(command=['./configure'] + self.configureFlags))
+        self.addStep(Configure(command=[
+            './configure', '--prefix', '$(PWD)/target'] + self.configureFlags))
         compile = ['make', self.makeTarget]
         testopts = self.testFlags
         # Timeout for the buildworker process