diff --git a/native/commonizer/testData/functionCommonization/signaturesWithNullableTypealiases/commonized/common/package_root.kt b/native/commonizer/testData/functionCommonization/signaturesWithNullableTypealiases/commonized/common/package_root.kt
new file mode 100644
index 00000000000..c4efae94909
--- /dev/null
+++ b/native/commonizer/testData/functionCommonization/signaturesWithNullableTypealiases/commonized/common/package_root.kt
@@ -0,0 +1,5 @@
+expect class Foo()
+
+typealias TypeAlias = Foo
+
+expect fun bar(x: TypeAlias?)
\ No newline at end of file
diff --git a/native/commonizer/testData/functionCommonization/signaturesWithNullableTypealiases/commonized/js/package_root.kt b/native/commonizer/testData/functionCommonization/signaturesWithNullableTypealiases/commonized/js/package_root.kt
new file mode 100644
index 00000000000..eab6a1203c8
--- /dev/null
+++ b/native/commonizer/testData/functionCommonization/signaturesWithNullableTypealiases/commonized/js/package_root.kt
@@ -0,0 +1,3 @@
+actual class Foo actual constructor()
+
+actual fun bar(x: TypeAlias?) { }
\ No newline at end of file
diff --git a/native/commonizer/testData/functionCommonization/signaturesWithNullableTypealiases/commonized/jvm/package_root.kt b/native/commonizer/testData/functionCommonization/signaturesWithNullableTypealiases/commonized/jvm/package_root.kt
new file mode 100644
index 00000000000..eab6a1203c8
--- /dev/null
+++ b/native/commonizer/testData/functionCommonization/signaturesWithNullableTypealiases/commonized/jvm/package_root.kt
@@ -0,0 +1,3 @@
+actual class Foo actual constructor()
+
+actual fun bar(x: TypeAlias?) { }
\ No newline at end of file
diff --git a/native/commonizer/testData/functionCommonization/signaturesWithNullableTypealiases/original/js/package_root.kt b/native/commonizer/testData/functionCommonization/signaturesWithNullableTypealiases/original/js/package_root.kt
new file mode 100644
index 00000000000..99ff5d3cd74
--- /dev/null
+++ b/native/commonizer/testData/functionCommonization/signaturesWithNullableTypealiases/original/js/package_root.kt
@@ -0,0 +1,5 @@
+class Foo
+
+typealias TypeAlias = Foo
+
+fun bar(x: TypeAlias?) { }
\ No newline at end of file
diff --git a/native/commonizer/testData/functionCommonization/signaturesWithNullableTypealiases/original/jvm/package_root.kt b/native/commonizer/testData/functionCommonization/signaturesWithNullableTypealiases/original/jvm/package_root.kt
new file mode 100644
index 00000000000..99ff5d3cd74
--- /dev/null
+++ b/native/commonizer/testData/functionCommonization/signaturesWithNullableTypealiases/original/jvm/package_root.kt
@@ -0,0 +1,5 @@
+class Foo
+
+typealias TypeAlias = Foo
+
+fun bar(x: TypeAlias?) { }
\ No newline at end of file
diff --git a/native/commonizer/tests/org/jetbrains/kotlin/descriptors/commonizer/FunctionCommonizationFromSourcesTest.kt b/native/commonizer/tests/org/jetbrains/kotlin/descriptors/commonizer/FunctionCommonizationFromSourcesTest.kt
index a3469857839..5cf962495e2 100644
--- a/native/commonizer/tests/org/jetbrains/kotlin/descriptors/commonizer/FunctionCommonizationFromSourcesTest.kt
+++ b/native/commonizer/tests/org/jetbrains/kotlin/descriptors/commonizer/FunctionCommonizationFromSourcesTest.kt
@@ -15,4 +15,6 @@ class FunctionCommonizationFromSourcesTest : AbstractCommonizationFromSourcesTes
     fun testAnnotations() = doTestSuccessfulCommonization()
 
     fun testSpecifics() = doTestSuccessfulCommonization()
+
+    fun testSignaturesWithNullableTypealiases() = doTestSuccessfulCommonization()
 }