diff --git a/rag/nlp/__init__.py b/rag/nlp/__init__.py
index 80acf1d8f..de7c2ce60 100644
--- a/rag/nlp/__init__.py
+++ b/rag/nlp/__init__.py
@@ -155,13 +155,13 @@ def qbullets_category(sections):
             if re.match(pro, sec) and not not_bullet(sec):
                 hits[i] += 1
                 break
-    maxium = 0
+    maximum = 0
     res = -1
     for i, h in enumerate(hits):
-        if h <= maxium:
+        if h <= maximum:
             continue
         res = i
-        maxium = h
+        maximum = h
     return res, QUESTION_PATTERN[res]
 
 
@@ -222,13 +222,13 @@ def bullets_category(sections):
                 if re.match(p, sec) and not not_bullet(sec):
                     hits[i] += 1
                     break
-    maxium = 0
+    maximum = 0
     res = -1
     for i, h in enumerate(hits):
-        if h <= maxium:
+        if h <= maximum:
             continue
         res = i
-        maxium = h
+        maximum = h
     return res