1 files changed, 1 insertions, 1 deletions

diff --git a/src/coding.c b/src/coding.c
index a5632bad963..6012978b60a 100644
--- a/src/coding.c
+++ b/src/coding.c
@@ -3902,7 +3902,7 @@ decode_coding_iso_2022 (struct coding_system *coding)
                   int size;
 
                   ONE_MORE_BYTE (dim);
-                  if (dim < 0 || dim > 4)
+                  if (dim < '0' || dim > '4')
                     goto invalid_code;
                   ONE_MORE_BYTE (M);
                   if (M < 128)