diff --git a/paddleocr.py b/paddleocr.py
index c5da7248d2cc7d778758a87309cfeaedcbd8ceb5..1f358061eaaf8825f61dd01b2204c1036c2482a2 100644
--- a/paddleocr.py
+++ b/paddleocr.py
@@ -179,7 +179,7 @@ def parse_args(mMain=True, add_help=True):
         parser.add_argument("--use_gpu", type=str2bool, default=True)
         parser.add_argument("--ir_optim", type=str2bool, default=True)
         parser.add_argument("--use_tensorrt", type=str2bool, default=False)
-        parser.add_argument("--gpu_mem", type=int, default=8000)
+        parser.add_argument("--gpu_mem", type=int, default=500)
 
         # params for text detector
         parser.add_argument("--image_dir", type=str)
@@ -232,7 +232,7 @@ def parse_args(mMain=True, add_help=True):
             use_gpu=True,
             ir_optim=True,
             use_tensorrt=False,
-            gpu_mem=8000,
+            gpu_mem=500,
             image_dir='',
             det_algorithm='DB',
             det_model_dir=None,
diff --git a/ppocr/utils/utility.py b/ppocr/utils/utility.py
index 7bb4c906d298af54ed56e2805f487a2c22d1894b..3f6255b0a9f79cc820b42569f18f82cf40ca3b7a 100755
--- a/ppocr/utils/utility.py
+++ b/ppocr/utils/utility.py
@@ -52,12 +52,14 @@ def get_image_file_list(img_file):
         raise Exception("not found any img file in {}".format(img_file))
 
     img_end = {'jpg', 'bmp', 'png', 'jpeg', 'rgb', 'tif', 'tiff', 'gif', 'GIF'}
-    if os.path.isfile(img_file) and imghdr.what(img_file) in img_end:
+    if os.path.isfile(img_file) and os.path.splitext(img_file)[-1][1:].lower(
+    ) in img_end:
         imgs_lists.append(img_file)
     elif os.path.isdir(img_file):
         for single_file in os.listdir(img_file):
             file_path = os.path.join(img_file, single_file)
-            if os.path.isfile(file_path) and imghdr.what(file_path) in img_end:
+            if os.path.isfile(file_path) and os.path.splitext(file_path)[-1][
+                    1:].lower() in img_end:
                 imgs_lists.append(file_path)
     if len(imgs_lists) == 0:
         raise Exception("not found any img file in {}".format(img_file))
@@ -77,4 +79,4 @@ def check_and_read_gif(img_path):
             frame = cv2.cvtColor(frame, cv2.COLOR_GRAY2RGB)
         imgvalue = frame[:, :, ::-1]
         return imgvalue, True
-    return None, False
\ No newline at end of file
+    return None, False