diff --git a/compiler/testData/diagnostics/tests/smartCasts/kt10444.kt b/compiler/testData/diagnostics/tests/smartCasts/kt10444.kt
new file mode 100644
index 00000000000..4a7dcb0e5b4
--- /dev/null
+++ b/compiler/testData/diagnostics/tests/smartCasts/kt10444.kt
@@ -0,0 +1,34 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+// KT-10444 Do not ignore smart (unchecked) casts to the same classifier
+
+class Qwe<T : Any>(val a: T?) {
+    fun test1(obj: Any) {
+        <!UNCHECKED_CAST!>obj as Qwe<T><!>
+        check(<!DEBUG_INFO_SMARTCAST!>obj<!>.a)
+    }
+
+    fun test1(obj: Qwe<*>) {
+        <!UNCHECKED_CAST!>obj as Qwe<T><!>
+        check(<!DEBUG_INFO_SMARTCAST!>obj<!>.a)
+    }
+
+    fun check(a: T?) {
+    }
+}
+
+open class Foo
+open class Bar<T: Foo>(open val a: T?, open val b: T?) {
+    @Suppress("UNCHECKED_CAST")
+    fun compare(obj: Any) {
+        if (obj !is Bar<*>) {
+            throw IllegalArgumentException()
+        }
+        if (System.currentTimeMillis() > 100) {
+            val b = (obj as Bar<T>).b
+            if (b == null) throw IllegalArgumentException()
+            check(<!DEBUG_INFO_SMARTCAST!>obj<!>.a, <!DEBUG_INFO_SMARTCAST!>b<!>)
+        }
+    }
+    fun check(a: T?, b: T) {
+    }
+}
diff --git a/compiler/testData/diagnostics/tests/smartCasts/kt10444.txt b/compiler/testData/diagnostics/tests/smartCasts/kt10444.txt
new file mode 100644
index 00000000000..38ce0c968ae
--- /dev/null
+++ b/compiler/testData/diagnostics/tests/smartCasts/kt10444.txt
@@ -0,0 +1,30 @@
+package
+
+public open class Bar</*0*/ T : Foo> {
+    public constructor Bar</*0*/ T : Foo>(/*0*/ a: T?, /*1*/ b: T?)
+    public open val a: T?
+    public open val b: T?
+    public final fun check(/*0*/ a: T?, /*1*/ b: T): kotlin.Unit
+    @kotlin.Suppress(names = {"UNCHECKED_CAST"}) public final fun compare(/*0*/ obj: kotlin.Any): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public open class Foo {
+    public constructor Foo()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public final class Qwe</*0*/ T : kotlin.Any> {
+    public constructor Qwe</*0*/ T : kotlin.Any>(/*0*/ a: T?)
+    public final val a: T?
+    public final fun check(/*0*/ a: T?): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public final fun test1(/*0*/ obj: Qwe<*>): kotlin.Unit
+    public final fun test1(/*0*/ obj: kotlin.Any): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
diff --git a/compiler/tests/org/jetbrains/kotlin/checkers/DiagnosticsTestGenerated.java b/compiler/tests/org/jetbrains/kotlin/checkers/DiagnosticsTestGenerated.java
index f746717f17f..68fc8ba4e7a 100644
--- a/compiler/tests/org/jetbrains/kotlin/checkers/DiagnosticsTestGenerated.java
+++ b/compiler/tests/org/jetbrains/kotlin/checkers/DiagnosticsTestGenerated.java
@@ -15567,6 +15567,12 @@ public class DiagnosticsTestGenerated extends AbstractDiagnosticsTest {
                 doTest(fileName);
             }
 
+            @TestMetadata("kt10444.kt")
+            public void testKt10444() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/tests/smartCasts/kt10444.kt");
+                doTest(fileName);
+            }
+
             @TestMetadata("kt10483.kt")
             public void testKt10483() throws Exception {
                 String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/tests/smartCasts/kt10483.kt");