diff --git a/python/python-psi-impl/resources/messages/PyPsiBundle.properties b/python/python-psi-impl/resources/messages/PyPsiBundle.properties
index a9baf97bb90a..8533501bfbd1 100644
--- a/python/python-psi-impl/resources/messages/PyPsiBundle.properties
+++ b/python/python-psi-impl/resources/messages/PyPsiBundle.properties
@@ -1095,6 +1095,7 @@ INSP.typeddict.qualifiers.cannot.be.used.outside.typeddict.definition=''{0}'' ca
 INSP.typeddict.required.and.not.required.cannot.be.nested=Required[] and NotRequired[] cannot be nested
 INSP.typeddict.read.only.cannot.be.nested=ReadOnly[] cannot be nested
 INSP.typeddict.required.notrequired.must.have.exactly.one.type.argument=''{0}'' must have exactly one type argument
+INSP.typeddict.unexpected.argument.for.__init_subclass__.of.TypedDict=Unexpected argument ''{0}'' for __init_subclass__ of TypedDict
 
 # PyTypeHintsInspection
 INSP.NAME.type.hints=Invalid type hints definitions and usages
diff --git a/python/python-psi-impl/src/com/jetbrains/python/inspections/PyTypedDictInspection.kt b/python/python-psi-impl/src/com/jetbrains/python/inspections/PyTypedDictInspection.kt
index c95b7bb7cf26..2441bf6a50e3 100644
--- a/python/python-psi-impl/src/com/jetbrains/python/inspections/PyTypedDictInspection.kt
+++ b/python/python-psi-impl/src/com/jetbrains/python/inspections/PyTypedDictInspection.kt
@@ -69,14 +69,23 @@ class PyTypedDictInspection : PyInspection() {
 
     override fun visitPyArgumentList(node: PyArgumentList) {
       if (node.parent is PyClass && PyTypedDictTypeProvider.isTypingTypedDictInheritor(node.parent as PyClass, myTypeEvalContext)) {
-        val arguments = node.arguments
-        for (argument in arguments) {
+        for (argument in node.arguments) {
           val type = myTypeEvalContext.getType(argument)
           if (!isValidSuperclass(argument, type)) {
             registerProblem(argument, PyPsiBundle.message("INSP.typeddict.typeddict.cannot.inherit.from.non.typeddict.base.class"))
           }
-          if (argument is PyKeywordArgument && argument.keyword == TYPED_DICT_TOTAL_PARAMETER && argument.valueExpression != null) {
-            checkValidTotality(argument.valueExpression!!)
+          if (argument is PyKeywordArgument) {
+            val keyword = argument.keyword
+            if (keyword == TYPED_DICT_TOTAL_PARAMETER) {
+              val valueExpression = argument.valueExpression
+              if (valueExpression != null) {
+                checkValidTotality(valueExpression)
+              }
+            }
+            else if (keyword != PyNames.METACLASS) {
+              registerProblem(argument,
+                              PyPsiBundle.message("INSP.typeddict.unexpected.argument.for.__init_subclass__.of.TypedDict", keyword))
+            }
           }
         }
       }
diff --git a/python/testSrc/com/jetbrains/python/inspections/PyTypedDictInspectionTest.java b/python/testSrc/com/jetbrains/python/inspections/PyTypedDictInspectionTest.java
index 5f27b09e3da0..cec0db42cf77 100644
--- a/python/testSrc/com/jetbrains/python/inspections/PyTypedDictInspectionTest.java
+++ b/python/testSrc/com/jetbrains/python/inspections/PyTypedDictInspectionTest.java
@@ -242,6 +242,13 @@ public class PyTypedDictInspectionTest extends PyInspectionTestCase {
                  "X = TypedDict('X', {'x': int}, total=<warning descr=\"Value of 'total' must be True or False\">1</warning>)");
   }
 
+  public void testUnexpectedInitClassArgument() {
+    doTestByText("""
+                   from typing import TypedDict
+                   class A(TypedDict, <warning descr="Unexpected argument 'ab' for __init_subclass__ of TypedDict">ab=False</warning>):
+                       i: int""");
+  }
+
   public void testGetWithIncorrectKeyType() {
     doTestByText("""
                    from typing import TypedDict