1 files changed, 1 insertions, 0 deletions

diff --git a/lisp/files.el b/lisp/files.el
index c44b1f31610..3fca81b9b30 100644
--- a/lisp/files.el
+++ b/lisp/files.el
@@ -948,6 +948,7 @@ run `normal-mode' explicitly."
     ("\\.pm\\'" . perl-mode)
     ("\\.cc\\'" . c++-mode)
     ("\\.hh\\'" . c++-mode)
+    ("\\.hpp\\'" . c++-mode)
     ("\\.C\\'" . c++-mode)
     ("\\.H\\'" . c++-mode)
     ("\\.cpp\\'" . c++-mode)