1 files changed, 1 insertions, 1 deletions

diff --git a/src/coding.c b/src/coding.c
index 388b4b833c4..405284f778b 100644
--- a/src/coding.c
+++ b/src/coding.c
@@ -3860,7 +3860,7 @@ decode_coding_iso_2022 (coding)
               continue;
 
             case '[':           /* specification of direction */
-              if (! CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_DIRECTION)
+              if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_DIRECTION))
                 goto invalid_code;
               /* For the moment, nested direction is not supported.
                  So, `coding->mode & CODING_MODE_DIRECTION' zero means