diff --git a/compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JVMCompilerArguments.kt b/compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JVMCompilerArguments.kt
index 10428c2f8aa..a9299638077 100644
--- a/compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JVMCompilerArguments.kt
+++ b/compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JVMCompilerArguments.kt
@@ -501,7 +501,7 @@ default: `indy-with-constants` for JVM target 9 or greater, `inline` otherwise""
         result[JvmAnalysisFlags.enableJvmPreview] = enableJvmPreview
         result[AnalysisFlags.allowUnstableDependencies] = allowUnstableDependencies || useFir
         result[JvmAnalysisFlags.disableUltraLightClasses] = disableUltraLightClasses
-        result[JvmAnalysisFlags.useIR] = useIR
+        result[JvmAnalysisFlags.useIR] = !useOldBackend
         return result
     }
 
diff --git a/compiler/testData/cli/jvm/suspendInFunInterfaceDefault.args b/compiler/testData/cli/jvm/suspendInFunInterfaceDefault.args
new file mode 100644
index 00000000000..ce9cc3c58b8
--- /dev/null
+++ b/compiler/testData/cli/jvm/suspendInFunInterfaceDefault.args
@@ -0,0 +1,3 @@
+$TESTDATA_DIR$/suspendInFunInterfaceDefault.kt
+-d
+$TEMP_DIR$
diff --git a/compiler/testData/cli/jvm/suspendInFunInterfaceDefault.kt b/compiler/testData/cli/jvm/suspendInFunInterfaceDefault.kt
new file mode 100644
index 00000000000..dc7eb99909e
--- /dev/null
+++ b/compiler/testData/cli/jvm/suspendInFunInterfaceDefault.kt
@@ -0,0 +1,3 @@
+fun interface FIC {
+    suspend fun foo()
+}
diff --git a/compiler/testData/cli/jvm/suspendInFunInterfaceDefault.out b/compiler/testData/cli/jvm/suspendInFunInterfaceDefault.out
new file mode 100644
index 00000000000..d86bac9de59
--- /dev/null
+++ b/compiler/testData/cli/jvm/suspendInFunInterfaceDefault.out
@@ -0,0 +1 @@
+OK
diff --git a/compiler/tests-gen/org/jetbrains/kotlin/cli/CliTestGenerated.java b/compiler/tests-gen/org/jetbrains/kotlin/cli/CliTestGenerated.java
index 213ba176c0d..a2d5ccf9d49 100644
--- a/compiler/tests-gen/org/jetbrains/kotlin/cli/CliTestGenerated.java
+++ b/compiler/tests-gen/org/jetbrains/kotlin/cli/CliTestGenerated.java
@@ -771,6 +771,11 @@ public class CliTestGenerated extends AbstractCliTest {
             runTest("compiler/testData/cli/jvm/suppressAllWarningsJvm.args");
         }
 
+        @TestMetadata("suspendInFunInterfaceDefault.args")
+        public void testSuspendInFunInterfaceDefault() throws Exception {
+            runTest("compiler/testData/cli/jvm/suspendInFunInterfaceDefault.args");
+        }
+
         @TestMetadata("suspendInFunInterfaceIrDisabled.args")
         public void testSuspendInFunInterfaceIrDisabled() throws Exception {
             runTest("compiler/testData/cli/jvm/suspendInFunInterfaceIrDisabled.args");
diff --git a/compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java b/compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java
index 5dcf7977240..66c7c4e8f89 100644
--- a/compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java
+++ b/compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java
@@ -8125,11 +8125,6 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
             @TestDataPath("$PROJECT_ROOT")
             @RunWith(JUnit3RunnerWithInners.class)
             public static class Resume extends AbstractLightAnalysisModeTest {
-                @TestMetadata("boxTypeParameterOfSuperTypeResult.kt")
-                public void ignoreBoxTypeParameterOfSuperTypeResult() throws Exception {
-                    runTest("compiler/testData/codegen/box/coroutines/inlineClasses/resume/boxTypeParameterOfSuperTypeResult.kt");
-                }
-
                 private void runTest(String testDataFilePath) throws Exception {
                     KotlinTestUtils.runTest(this::doTest, TargetBackend.JVM, testDataFilePath);
                 }
@@ -8153,6 +8148,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
                     runTest("compiler/testData/codegen/box/coroutines/inlineClasses/resume/boxTypeParameterOfSuperType.kt");
                 }
 
+                @TestMetadata("boxTypeParameterOfSuperTypeResult.kt")
+                public void testBoxTypeParameterOfSuperTypeResult() throws Exception {
+                    runTest("compiler/testData/codegen/box/coroutines/inlineClasses/resume/boxTypeParameterOfSuperTypeResult.kt");
+                }
+
                 @TestMetadata("boxUnboxInsideCoroutine.kt")
                 public void testBoxUnboxInsideCoroutine() throws Exception {
                     runTest("compiler/testData/codegen/box/coroutines/inlineClasses/resume/boxUnboxInsideCoroutine.kt");
@@ -8363,11 +8363,6 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
             @TestDataPath("$PROJECT_ROOT")
             @RunWith(JUnit3RunnerWithInners.class)
             public static class ResumeWithException extends AbstractLightAnalysisModeTest {
-                @TestMetadata("boxTypeParameterOfSuperTypeResult.kt")
-                public void ignoreBoxTypeParameterOfSuperTypeResult() throws Exception {
-                    runTest("compiler/testData/codegen/box/coroutines/inlineClasses/resumeWithException/boxTypeParameterOfSuperTypeResult.kt");
-                }
-
                 private void runTest(String testDataFilePath) throws Exception {
                     KotlinTestUtils.runTest(this::doTest, TargetBackend.JVM, testDataFilePath);
                 }
@@ -8391,6 +8386,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
                     runTest("compiler/testData/codegen/box/coroutines/inlineClasses/resumeWithException/boxTypeParameterOfSuperType.kt");
                 }
 
+                @TestMetadata("boxTypeParameterOfSuperTypeResult.kt")
+                public void testBoxTypeParameterOfSuperTypeResult() throws Exception {
+                    runTest("compiler/testData/codegen/box/coroutines/inlineClasses/resumeWithException/boxTypeParameterOfSuperTypeResult.kt");
+                }
+
                 @TestMetadata("boxUnboxInsideCoroutine.kt")
                 public void testBoxUnboxInsideCoroutine() throws Exception {
                     runTest("compiler/testData/codegen/box/coroutines/inlineClasses/resumeWithException/boxUnboxInsideCoroutine.kt");