diff --git a/pisi/actionsapi/scons.py b/pisi/actionsapi/scons.py
index 6d6d0803..4781a301 100644
--- a/pisi/actionsapi/scons.py
+++ b/pisi/actionsapi/scons.py
@@ -41,5 +41,5 @@ def make(parameters = ''):
         raise MakeError(_('!!! Make failed...\n'))
 
 def install(parameters = 'install'):
-    if system("scons prefix=%s/%s %s" % (get.installDIR(), get.defaultprefixDIR(), parameters)):
+    if system("scons prefix=%s %s" % (get.installDIR(), parameters)):
         raise InstallError(_('!!! Install failed...\n'))