diff --git a/Makefile.am b/Makefile.am
index 541afb0..a3fd0d6 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -50,7 +50,7 @@
 		routing_table.cpp \
 		config_parser.cpp \
 		dhcp_configuration.cpp \
-        vlan_interface.cpp \
+		vlan_interface.cpp \
 		rtnetlink_server.cpp \
 		timer.cpp \
 		dns_updater.cpp \