diff --git a/categories.py b/categories.py
index 1bfce9a3c..34b4f22ef 100644
--- a/categories.py
+++ b/categories.py
@@ -262,11 +262,11 @@ def set_hashtag_category(base_dir: str, hashtag: str, category: str,
     return False
 
 
-def guess_hashtag_category(tagName: str, hashtag_categories: {}) -> str:
+def guess_hashtag_category(tag_name: str, hashtag_categories: {}) -> str:
     """Tries to guess a category for the given hashtag.
     This works by trying to find the longest similar hashtag
     """
-    if len(tagName) < 4:
+    if len(tag_name) < 6:
         return ''
 
     category_matched = ''
@@ -274,12 +274,12 @@ def guess_hashtag_category(tagName: str, hashtag_categories: {}) -> str:
 
     for category_str, hashtag_list in hashtag_categories.items():
         for hashtag in hashtag_list:
-            if len(hashtag) < 4:
+            if len(hashtag) < 6:
                 # avoid matching very small strings which often
                 # lead to spurious categories
                 continue
-            if hashtag not in tagName:
-                if tagName not in hashtag:
+            if hashtag not in tag_name:
+                if tag_name not in hashtag:
                     continue
             if not category_matched:
                 tag_matched_len = len(hashtag)