diff --git a/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/InteropLowering.kt b/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/InteropLowering.kt
index 7e228c6fb83..66720bdb0ad 100644
--- a/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/InteropLowering.kt
+++ b/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/InteropLowering.kt
@@ -127,7 +127,7 @@ private class InteropLoweringPart1(val context: Context) : BaseInteropIrTransfor
 
     lateinit var currentFile: IrFile
 
-    private val topLevelInitializers = mutableListOf<IrExpression>()
+    private val eagerTopLevelInitializers = mutableListOf<IrExpression>()
     private val newTopLevelDeclarations = mutableListOf<IrDeclaration>()
 
     override val irFile: IrFile
@@ -142,8 +142,8 @@ private class InteropLoweringPart1(val context: Context) : BaseInteropIrTransfor
         currentFile = irFile
         irFile.transformChildrenVoid(this)
 
-        topLevelInitializers.forEach { irFile.addTopLevelInitializer(it, context, false) }
-        topLevelInitializers.clear()
+        eagerTopLevelInitializers.forEach { irFile.addTopLevelInitializer(it, context, threadLocal = false, eager = true) }
+        eagerTopLevelInitializers.clear()
 
         irFile.addChildren(newTopLevelDeclarations)
         newTopLevelDeclarations.clear()
@@ -191,7 +191,7 @@ private class InteropLoweringPart1(val context: Context) : BaseInteropIrTransfor
 
         if (irClass.annotations.hasAnnotation(interop.exportObjCClass.fqNameSafe)) {
             val irBuilder = context.createIrBuilder(currentFile.symbol).at(irClass)
-            topLevelInitializers.add(irBuilder.getObjCClass(symbols, irClass.symbol))
+            eagerTopLevelInitializers.add(irBuilder.getObjCClass(symbols, irClass.symbol))
         }
     }
 
diff --git a/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/ir/util/IrUtils2.kt b/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/ir/util/IrUtils2.kt
index 446b486e22e..a0f5b4f1319 100644
--- a/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/ir/util/IrUtils2.kt
+++ b/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/ir/util/IrUtils2.kt
@@ -62,7 +62,7 @@ internal fun irBuilder(
 
 private var topLevelInitializersCounter = 0
 
-internal fun IrFile.addTopLevelInitializer(expression: IrExpression, context: KonanBackendContext, threadLocal: Boolean) {
+internal fun IrFile.addTopLevelInitializer(expression: IrExpression, context: KonanBackendContext, threadLocal: Boolean, eager: Boolean) {
     val irField = IrFieldImpl(
             expression.startOffset, expression.endOffset,
             IrDeclarationOrigin.DEFINED,
@@ -79,6 +79,9 @@ internal fun IrFile.addTopLevelInitializer(expression: IrExpression, context: Ko
         if (threadLocal)
             annotations += buildSimpleAnnotation(context.irBuiltIns, startOffset, endOffset, context.ir.symbols.threadLocal.owner)
 
+        if (eager)
+            annotations += buildSimpleAnnotation(context.irBuiltIns, startOffset, endOffset, context.ir.symbols.eagerInitialization.owner)
+
         initializer = IrExpressionBodyImpl(startOffset, endOffset, expression)
     }
     addChild(irField)
diff --git a/kotlin-native/backend.native/tests/interop/objc/objcTests.def b/kotlin-native/backend.native/tests/interop/objc/objcTests.def
index 66090941d9a..e3583653cb0 100644
--- a/kotlin-native/backend.native/tests/interop/objc/objcTests.def
+++ b/kotlin-native/backend.native/tests/interop/objc/objcTests.def
@@ -1,6 +1,8 @@
 language = Objective-C
-headers = Foundation/NSArray.h Foundation/NSValue.h Foundation/NSString.h Foundation/NSStream.h Foundation/NSBundle.h
+headers = Foundation/NSArray.h Foundation/NSValue.h Foundation/NSString.h Foundation/NSStream.h Foundation/NSBundle.h \
+    objc/runtime.h
 headerFilter = **/interop/objc/tests/**.h \
     Foundation/NSArray.h Foundation/NSValue.h Foundation/NSString.h Foundation/NSStream.h \
-    objc/objc.h Foundation/NSBundle.h
+    objc/objc.h Foundation/NSBundle.h \
+    objc/runtime.h
 linkerOpts = -lobjctests
diff --git a/kotlin-native/backend.native/tests/interop/objc/tests/kt53373_1.kt b/kotlin-native/backend.native/tests/interop/objc/tests/kt53373_1.kt
new file mode 100644
index 00000000000..9072ccd431c
--- /dev/null
+++ b/kotlin-native/backend.native/tests/interop/objc/tests/kt53373_1.kt
@@ -0,0 +1,5 @@
+import objcTests.*
+import kotlinx.cinterop.*
+
+@ExportObjCClass
+class KT53373 : NSObject()
\ No newline at end of file
diff --git a/kotlin-native/backend.native/tests/interop/objc/tests/kt53373_2.kt b/kotlin-native/backend.native/tests/interop/objc/tests/kt53373_2.kt
new file mode 100644
index 00000000000..45957434c2e
--- /dev/null
+++ b/kotlin-native/backend.native/tests/interop/objc/tests/kt53373_2.kt
@@ -0,0 +1,10 @@
+import kotlinx.cinterop.*
+import kotlin.test.*
+import objcTests.*
+
+@Test
+fun testKT53373() {
+    val kt53373Class = objc_lookUpClass("KT53373")
+    assertNotNull(kt53373Class)
+    assertEquals("KT53373", class_getName(kt53373Class)?.toKString())
+}