diff --git a/lib/constants.py b/lib/constants.py
index e5a210c4d5e2503d71387df77ac74ee118c77581..0bcf70a8a2378760c72d3a294872ec5edd09d286 100644
--- a/lib/constants.py
+++ b/lib/constants.py
@@ -101,6 +101,7 @@ RAPI_USERS_FILE = DATA_DIR + "/rapi_users"
 QUEUE_DIR = DATA_DIR + "/queue"
 ETC_HOSTS = "/etc/hosts"
 DEFAULT_FILE_STORAGE_DIR = _autoconf.FILE_STORAGE_DIR
+SYSCONFDIR = _autoconf.SYSCONFDIR
 
 MASTER_SOCKET = SOCKET_DIR + "/ganeti-master"
 
diff --git a/lib/hypervisor/hv_kvm.py b/lib/hypervisor/hv_kvm.py
index 38ed993b35dd4ab8db01056dbee375aec2d77a99..23946839d4c484b3eb58bc30e3646007400fd981 100644
--- a/lib/hypervisor/hv_kvm.py
+++ b/lib/hypervisor/hv_kvm.py
@@ -76,6 +76,8 @@ class KVMHypervisor(hv_base.BaseHypervisor):
   _MIGRATION_STATUS_RE = re.compile('Migration\s+status:\s+(\w+)',
                                     re.M | re.I)
 
+  _KVM_NETWORK_SCRIPT = constants.SYSCONFDIR + "/ganeti/kvm-vif-bridge"
+
   def __init__(self):
     hv_base.BaseHypervisor.__init__(self)
     # Let's make sure the directories we need exist, even if the RUN_DIR lives
@@ -148,9 +150,9 @@ class KVMHypervisor(hv_base.BaseHypervisor):
     script.write("export BRIDGE=%s\n" % nic.bridge)
     script.write("export INTERFACE=$1\n")
     # TODO: make this configurable at ./configure time
-    script.write("if [ -x /etc/ganeti/kvm-vif-bridge ]; then\n")
+    script.write("if [ -x '%s' ]; then\n" % self._KVM_NETWORK_SCRIPT)
     script.write("  # Execute the user-specific vif file\n")
-    script.write("  /etc/ganeti/kvm-vif-bridge\n")
+    script.write("  %s\n" % self._KVM_NETWORK_SCRIPT)
     script.write("else\n")
     script.write("  # Connect the interface to the bridge\n")
     script.write("  /sbin/ifconfig $INTERFACE 0.0.0.0 up\n")