diff --git a/seahub/views/file.py b/seahub/views/file.py
index a9156945b9..9a7a938388 100644
--- a/seahub/views/file.py
+++ b/seahub/views/file.py
@@ -53,7 +53,7 @@ from seahub.utils import render_error, is_org_context, \
     mkstemp, EMPTY_SHA1, HtmlDiff, gen_inner_file_get_url, \
     user_traffic_over_limit, get_file_audit_events_by_path, \
     generate_file_audit_event_type, FILE_AUDIT_ENABLED, \
-    get_conf_text_ext, HAS_OFFICE_CONVERTER, FILEEXT_TYPE_MAP, \
+    get_conf_text_ext, HAS_OFFICE_CONVERTER, PREVIEW_FILEEXT, \
     normalize_file_path, get_service_url, redirect_to_login, \
     OFFICE_PREVIEW_MAX_SIZE
 
@@ -356,7 +356,7 @@ def can_preview_file(file_name, file_size, repo):
                 return False, error_msg
     else:
         # NOT depends on Seafile settings
-        if filetype not in FILEEXT_TYPE_MAP:
+        if filetype not in PREVIEW_FILEEXT.keys():
             error_msg = "File preview unsupported"
             return False, error_msg