diff --git a/.editorconfig b/.editorconfig
index c0b80fdf47..b117784d13 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -5,7 +5,7 @@ indent_style = space
 indent_size = 2
 end_of_line = lf
 insert_final_newline = true
-charset = utf_8
+charset = utf-8
 
 [{Makefile,**/Makefile,runtime/doc/*.txt}]
 indent_style = tab