diff --git a/src/fileio.c b/src/fileio.c
index d27a172..890eac7 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -5714,7 +5714,8 @@
 				)
 			    *allow_dirs = TRUE;
 			reg_pat[i++] = '\\';
-			reg_pat[i++] = *p;
+			if (enc_dbcs != 0 && (*mb_ptr2len)(p) > 1)
+			    reg_pat[i++] = *p++;
 		    }
 		break;
 #ifdef BACKSLASH_IN_FILENAME