1 files changed, 2 insertions, 0 deletions

diff --git a/lisp/progmodes/flymake.el b/lisp/progmodes/flymake.el
index 1048bc50655..19dac81fe6d 100644
--- a/lisp/progmodes/flymake.el
+++ b/lisp/progmodes/flymake.el
@@ -407,6 +407,8 @@ Currently accepted REPORT-KEY arguments are:
 * `:force': value should be a boolean suggesting that Flymake
   consider the report even if it was somehow unexpected.")
 
+(put 'flymake-diagnostic-functions 'safe-local-variable #'null)
+
 (defvar flymake-diagnostic-types-alist
   `((:error
      . ((flymake-category . flymake-error)))