diff --git a/ppocr/data/imaug/label_ops.py b/ppocr/data/imaug/label_ops.py
index 86366d7a4f2e908426e67015b4338e44350da492..c9bc2e7722e8027ce870e4969bfcdab720495c28 100644
--- a/ppocr/data/imaug/label_ops.py
+++ b/ppocr/data/imaug/label_ops.py
@@ -113,14 +113,14 @@ class BaseRecLabelEncode(object):
             dict_character = list(self.character_str)
             self.lower = True
         else:
-            self.character_str = ""
+            self.character_str = []
             with open(character_dict_path, "rb") as fin:
                 lines = fin.readlines()
                 for line in lines:
                     line = line.decode('utf-8').strip("\n").strip("\r\n")
-                    self.character_str += line
+                    self.character_str.append(line)
             if use_space_char:
-                self.character_str += " "
+                self.character_str.append(" ")
             dict_character = list(self.character_str)
         dict_character = self.add_special_char(dict_character)
         self.dict = {}
diff --git a/ppocr/utils/dict/ka_dict.txt b/ppocr/utils/dict/ka_dict.txt
index 33d605c4de106c3c4b2504f5b3c42cdadd076dd8..d506b691bd1a6c55299ad89a72cf3a69a2c879a9 100644
--- a/ppocr/utils/dict/ka_dict.txt
+++ b/ppocr/utils/dict/ka_dict.txt
@@ -21,7 +21,7 @@ l
 8
 .
 j
-p	
+p
 ಗ
 ು
 ಣ
diff --git a/ppocr/utils/dict/ta_dict.txt b/ppocr/utils/dict/ta_dict.txt
index d1bae501ad2556bb59b16a6c4b27a27091a6cbcf..19d81892c205627f296adbf8b20ea41aba2de5d0 100644
--- a/ppocr/utils/dict/ta_dict.txt
+++ b/ppocr/utils/dict/ta_dict.txt
@@ -22,7 +22,7 @@ l
 8
 .
 j
-p	
+p
 ப
 ூ
 த
diff --git a/tools/infer/utility.py b/tools/infer/utility.py
index 762db868f58d11aaa626a2e55591d47bfa9536a9..a93f364b31d6d9cb718337b0731330a172296396 100644
--- a/tools/infer/utility.py
+++ b/tools/infer/utility.py
@@ -301,7 +301,8 @@ def create_predictor(args, mode, logger):
         # enable memory optim
         config.enable_memory_optim()
         config.disable_glog_info()
-
+        config.delete_pass("reshape_transpose_matmul_v2_mkldnn_fuse_pass")
+        config.delete_pass("reshape_transpose_matmul_mkldnn_fuse_pass")
         config.delete_pass("conv_transpose_eltwiseadd_bn_fuse_pass")
         if mode == 'table':
             config.delete_pass("fc_fuse_pass")  # not supported for table