diff --git a/compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/ClassGenerator.kt b/compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/ClassGenerator.kt
index d2bb7d4f6f8..28bdc7b5638 100644
--- a/compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/ClassGenerator.kt
+++ b/compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/ClassGenerator.kt
@@ -215,13 +215,13 @@ class ClassGenerator(declarationGenerator: DeclarationGenerator) : DeclarationGe
 
     private fun generatePrimaryConstructor(irClass: IrClass, ktClassOrObject: KtClassOrObject): IrConstructor? {
         val classDescriptor = irClass.descriptor
-        if (DescriptorUtils.isAnnotationClass(classDescriptor)) return null
-
         val primaryConstructorDescriptor = classDescriptor.unsubstitutedPrimaryConstructor ?: return null
 
         val irPrimaryConstructor = FunctionGenerator(declarationGenerator).generatePrimaryConstructor(primaryConstructorDescriptor, ktClassOrObject)
 
-        irClass.addMember(irPrimaryConstructor)
+        if (!DescriptorUtils.isAnnotationClass(classDescriptor)) {
+            irClass.addMember(irPrimaryConstructor)
+        }
 
         return irPrimaryConstructor
     }