diff --git a/compiler/tests-common/org/jetbrains/kotlin/codegen/ir/AbstractIrBlackBoxInlineCodegenTest.kt b/compiler/tests-common/org/jetbrains/kotlin/codegen/ir/AbstractIrBlackBoxInlineCodegenTest.kt
index 16b768826c2..d62fe2b1e06 100644
--- a/compiler/tests-common/org/jetbrains/kotlin/codegen/ir/AbstractIrBlackBoxInlineCodegenTest.kt
+++ b/compiler/tests-common/org/jetbrains/kotlin/codegen/ir/AbstractIrBlackBoxInlineCodegenTest.kt
@@ -20,6 +20,6 @@ import org.jetbrains.kotlin.codegen.AbstractBlackBoxCodegenTest
 import org.jetbrains.kotlin.config.CompilerConfiguration
 import org.jetbrains.kotlin.config.JVMConfigurationKeys
 
-open class AbstractIrBlackBoxInlineCodegenTest: AbstractBlackBoxCodegenTest() {
+abstract class AbstractIrBlackBoxInlineCodegenTest: AbstractBlackBoxCodegenTest() {
     override fun updateConfiguration(configuration: CompilerConfiguration) = configuration.put(JVMConfigurationKeys.IR, true)
 }
\ No newline at end of file
diff --git a/compiler/tests-common/org/jetbrains/kotlin/codegen/ir/AbstractIrCompileKotlinAgainstInlineKotlinTest.kt b/compiler/tests-common/org/jetbrains/kotlin/codegen/ir/AbstractIrCompileKotlinAgainstInlineKotlinTest.kt
index e64285b1b44..4598e34d8d3 100644
--- a/compiler/tests-common/org/jetbrains/kotlin/codegen/ir/AbstractIrCompileKotlinAgainstInlineKotlinTest.kt
+++ b/compiler/tests-common/org/jetbrains/kotlin/codegen/ir/AbstractIrCompileKotlinAgainstInlineKotlinTest.kt
@@ -20,6 +20,6 @@ import org.jetbrains.kotlin.codegen.AbstractCompileKotlinAgainstInlineKotlinTest
 import org.jetbrains.kotlin.config.CompilerConfiguration
 import org.jetbrains.kotlin.config.JVMConfigurationKeys
 
-open class AbstractIrCompileKotlinAgainstInlineKotlinTest : AbstractCompileKotlinAgainstInlineKotlinTest() {
+abstract class AbstractIrCompileKotlinAgainstInlineKotlinTest : AbstractCompileKotlinAgainstInlineKotlinTest() {
     override fun updateConfiguration(configuration: CompilerConfiguration) = configuration.put(JVMConfigurationKeys.IR, true)
 }
\ No newline at end of file