1 files changed, 1 insertions, 1 deletions

diff --git a/src/regex.h b/src/regex.h
index e38853eaf65..8217fc0ea01 100644
--- a/src/regex.h
+++ b/src/regex.h
@@ -145,7 +145,7 @@ extern reg_syntax_t re_syntax_options;
 #define RE_SYNTAX_AWK                                                   \
   (RE_BACKSLASH_ESCAPE_IN_LISTS | RE_DOT_NOT_NULL                       \
    | RE_NO_BK_PARENS            | RE_NO_BK_REFS                         \
-   | RE_NO_BK_VAR               | RE_NO_EMPTY_RANGES                    \
+   | RE_NO_BK_VBAR               | RE_NO_EMPTY_RANGES                   \
    | RE_UNMATCHED_RIGHT_PAREN_ORD)
 
 #define RE_SYNTAX_POSIX_AWK                                             \