1 files changed, 2 insertions, 1 deletions

diff --git a/lisp/progmodes/ruby-mode.el b/lisp/progmodes/ruby-mode.el
index a5efb934a22..09338860c75 100644
--- a/lisp/progmodes/ruby-mode.el
+++ b/lisp/progmodes/ruby-mode.el
@@ -2007,7 +2007,8 @@ It will be properly highlighted even when the call omits parens.")
          (t
           (error (concat
                   "Internal error on `ruby-in-ppss-context-p': "
-                  "context name `" (symbol-name context) "' is unknown"))))
+                  "context name `%s' is unknown")
+                 context)))
         t)))
 
 (defvar ruby-font-lock-syntax-table