diff --git a/diameter/Custom.make b/diameter/Custom.make
deleted file mode 100644
index 30b607448e..0000000000
--- a/diameter/Custom.make
+++ /dev/null
@@ -1,6 +0,0 @@
-#
-# Add custom dictionaries here as:
-# 	diameter/foo.xml
-#
-
-_CUSTOM_diameter_xml_files_ =