diff --git a/.editorconfig b/.editorconfig
index 89742b69..66970770 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -1,4 +1,4 @@
-[*.[ch]]
+[*.[ch] *.cxx]
 indent_style = space
 indent_size = 2
 trim_trailing_whitespace = true