diff --git a/.editorconfig b/.editorconfig
index a31bb2637..41d204054 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -10,7 +10,7 @@ insert_final_newline = true
 
 # Matches multiple files with brace expansion notation
 # Set default charset
-[{etc,include,lib,plugins,src,tests,tools}/**.{c,h}]
+[{etc,include,lib,plugins,src,tests,tools}/**.{c,h,proto}]
 charset = utf-8
 indent_style = tab
 indent_size = 8