1 files changed, 4 insertions, 3 deletions

diff --git a/src/syntax.c b/src/syntax.c
index d45936b2b28..d543a5f9823 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -1333,9 +1333,10 @@ DEFUN ("internal-describe-syntax-value", Finternal_describe_syntax_value,
     insert_string (" (nestable)");
 
   if (prefix)
-    insert1 (Fsubstitute_command_keys
-             (build_string
-              (",\n\t  is a prefix character for `backward-prefix-chars'")));
+    insert1 (CALLN (Fformat,
+                    (build_string
+                     (",\n\t  is a prefix character for "
+                      uLSQM"backward-prefix-chars"uRSQM))));
 
   return syntax;
 }