diff --git a/doc/changes.src b/doc/changes.src
index af2ababd..682c7d1c 100644
--- a/doc/changes.src
+++ b/doc/changes.src
@@ -44,7 +44,7 @@ since 2007.
 
 \b More Codeview debug format fixes.
 
-\b If the MASM PTR keyword is encountered, issue a warning.  This is
+\b If the MASM \c{PTR} keyword is encountered, issue a warning.  This is
    much more likely to indicate a MASM-ism encountered in NASM than it
    is a valid label.  This warning can be suppressed with \c{-w-ptr},
    the \c{[warning]} directive (see \k{opt-w}) or by the macro