diff --git a/clang-tools-extra/clang-tidy/add_new_check.py b/clang-tools-extra/clang-tidy/add_new_check.py
--- a/clang-tools-extra/clang-tidy/add_new_check.py
+++ b/clang-tools-extra/clang-tidy/add_new_check.py
@@ -129,7 +129,7 @@
     HeaderFound = False
     CheckAdded = False
     CheckFqName = Module + '-' + CheckName
-    CHeckDecl = ('    CheckFactories.registerCheck<' + CheckNameCamel
+    CheckDecl = ('    CheckFactories.registerCheck<' + CheckNameCamel
                  + '>(\n        "' + CheckFqName + '");\n')
 
     Lines = iter(Lines)
@@ -150,7 +150,7 @@
         if not CheckAdded:
           if Line.strip() == '}':
             CheckAdded = True
-            F.write(CHeckDecl)
+            F.write(CheckDecl)
           else:
             Match = re.search(r'registerCheck<(.*)> *\( *(?:"([^"]*)")?', Line)
             PrevLine = None
@@ -166,7 +166,7 @@
                   CurrentCheckName = Match.group(1)
               if CurrentCheckName > CheckFqName:
                 CheckAdded = True
-                F.write(CHeckDecl)
+                F.write(CheckDecl)
               if PrevLine:
                 F.write(PrevLine)
         F.write(Line)