diff --git a/native/swift/sir-passes/src/org/jetbrains/sir/passes/utility/DeclarationParentVisitor.kt b/native/swift/sir-passes/src/org/jetbrains/sir/passes/utility/DeclarationParentVisitor.kt
index 18bc175b725..f5936bc939d 100644
--- a/native/swift/sir-passes/src/org/jetbrains/sir/passes/utility/DeclarationParentVisitor.kt
+++ b/native/swift/sir-passes/src/org/jetbrains/sir/passes/utility/DeclarationParentVisitor.kt
@@ -31,7 +31,14 @@ internal abstract class DeclarationParentVisitor : SirVisitor<Unit, Nothing?>()
     }
 
     override fun visitDeclaration(declaration: SirDeclaration, data: Nothing?) {
-        handleParent(declaration, declarationParentStack.peekFirst())
+        // Special case if visitor is started not from the module node.
+        // In this case we assume that parent is set properly.
+        val currentParent = if (declarationParentStack.size == 0) {
+            declaration.parent
+        } else {
+            declarationParentStack.peekFirst()
+        }
+        handleParent(declaration, currentParent)
 
         if (declaration is SirDeclarationParent) {
             declarationParentStack.push(declaration)
diff --git a/native/swift/sir-passes/tests/org/jetbrains/kotlin/sir/passes/SirPassTests.kt b/native/swift/sir-passes/tests/org/jetbrains/kotlin/sir/passes/SirPassTests.kt
index 9851b832a4e..48d76afa240 100644
--- a/native/swift/sir-passes/tests/org/jetbrains/kotlin/sir/passes/SirPassTests.kt
+++ b/native/swift/sir-passes/tests/org/jetbrains/kotlin/sir/passes/SirPassTests.kt
@@ -17,9 +17,11 @@ import org.jetbrains.kotlin.sir.mock.MockKotlinType
 import org.jetbrains.kotlin.sir.mock.MockParameter
 import org.jetbrains.kotlin.sir.passes.asserts.assertSirFunctionsEquals
 import org.jetbrains.kotlin.sir.passes.mocks.MockSirFunction
+import org.jetbrains.kotlin.sir.passes.util.runWithAsserts
 import org.jetbrains.kotlin.sir.util.SirSwiftModule
 import org.jetbrains.sir.passes.run
 import org.jetbrains.sir.passes.translation.ForeignIntoSwiftFunctionTranslationPass
+import org.jetbrains.sir.passes.utility.assertValid
 import kotlin.test.Test
 import kotlin.test.assertNotNull
 
@@ -38,9 +40,8 @@ class SirPassTests {
             visibility = SirVisibility.PUBLIC
         }
         mySirElement.parent = module
-
         val myPass = ForeignIntoSwiftFunctionTranslationPass()
-        val result = myPass.run(mySirElement) as? SirFunction
+        val result = myPass.runWithAsserts(mySirElement, null) as? SirFunction
         assertNotNull(result, "SirFunction should be produced")
         val exp = MockSirFunction(
             name = "foo",
@@ -94,9 +95,8 @@ class SirPassTests {
             visibility = SirVisibility.PUBLIC
         }
         mySirElement.parent = module
-
         val myPass = ForeignIntoSwiftFunctionTranslationPass()
-        val result = myPass.run(mySirElement) as? SirFunction
+        val result = myPass.runWithAsserts(mySirElement, null) as? SirFunction
         assertNotNull(result, "SirFunction should be produced")
         val exp = MockSirFunction(
             name = "foo",
diff --git a/native/swift/sir-passes/tests/org/jetbrains/kotlin/sir/passes/util/PassTestingInfrastructure.kt b/native/swift/sir-passes/tests/org/jetbrains/kotlin/sir/passes/util/PassTestingInfrastructure.kt
new file mode 100644
index 00000000000..f8f2a61d259
--- /dev/null
+++ b/native/swift/sir-passes/tests/org/jetbrains/kotlin/sir/passes/util/PassTestingInfrastructure.kt
@@ -0,0 +1,19 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.sir.passes.util
+
+import org.jetbrains.kotlin.sir.SirElement
+import org.jetbrains.sir.passes.SirPass
+import org.jetbrains.sir.passes.utility.assertValid
+
+fun <S : SirElement, R, T> SirPass<S, T, R>.runWithAsserts(element: S, data: T): R {
+    element.assertValid()
+    val result = run(element, data)
+    if (result is SirElement) {
+        result.assertValid()
+    }
+    return result
+}
\ No newline at end of file