1 files changed, 2 insertions, 2 deletions

diff --git a/src/search.c b/src/search.c
index b3d67e6c431..a3b4e1dcbce 100644
--- a/src/search.c
+++ b/src/search.c
@@ -1760,7 +1760,7 @@ boyer_moore (EMACS_INT n, unsigned char *base_pat,
                 ch = -1;
             }
 
-          if (ch >= 0200)
+          if (ch >= 0200 && multibyte)
             j = (ch & 0x3F) | 0200;
           else
             j = *ptr;
@@ -1779,7 +1779,7 @@ boyer_moore (EMACS_INT n, unsigned char *base_pat,
               while (1)
                 {
                   TRANSLATE (ch, inverse_trt, ch);
-                  if (ch >= 0200)
+                  if (ch >= 0200 && multibyte)
                     j = (ch & 0x3F) | 0200;
                   else
                     j = ch;