diff --git a/doc/arm/.gitattributes b/doc/arm/.gitattributes
new file mode 100644
index 0000000000..967c07a8e2
--- /dev/null
+++ b/doc/arm/.gitattributes
@@ -0,0 +1,7 @@
+
+Bv9ARM.ch* -diff -merge
+Bv9ARM.pdf -diff -merge
+Bv9ARM.xml   text
+Bv9ARM.conf  text
+
+*.xml auto=text