diff --git a/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirBlackBoxCodegenTestGenerated.java b/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirBlackBoxCodegenTestGenerated.java
index d1c3fa3a81139..d55c344ae981c 100644
--- a/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirBlackBoxCodegenTestGenerated.java
+++ b/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirBlackBoxCodegenTestGenerated.java
@@ -22346,6 +22346,12 @@ public void testKt46408() throws Exception {
                     runTest("compiler/testData/codegen/box/invokedynamic/sam/functionRefToJavaInterface/kt46408.kt");
                 }
 
+                @Test
+                @TestMetadata("kt49613.kt")
+                public void testKt49613() throws Exception {
+                    runTest("compiler/testData/codegen/box/invokedynamic/sam/functionRefToJavaInterface/kt49613.kt");
+                }
+
                 @Test
                 @TestMetadata("localFunction1.kt")
                 public void testLocalFunction1() throws Exception {
diff --git a/compiler/ir/backend.jvm/lower/src/org/jetbrains/kotlin/backend/jvm/lower/TypeOperatorLowering.kt b/compiler/ir/backend.jvm/lower/src/org/jetbrains/kotlin/backend/jvm/lower/TypeOperatorLowering.kt
index 2d6a1a67eaecb..d186fbd6b18cc 100644
--- a/compiler/ir/backend.jvm/lower/src/org/jetbrains/kotlin/backend/jvm/lower/TypeOperatorLowering.kt
+++ b/compiler/ir/backend.jvm/lower/src/org/jetbrains/kotlin/backend/jvm/lower/TypeOperatorLowering.kt
@@ -270,7 +270,7 @@ private class TypeOperatorLowering(private val context: JvmBackendContext) : Fil
         targetRef: IrFunctionReference
     ): IrCall {
         fun fail(message: String): Nothing =
-            throw AssertionError("$message, irFunRef:\n${targetRef.dump()}")
+            throw AssertionError("$message, targetRef:\n${targetRef.dump()}")
 
         val dynamicCallArguments = ArrayList<IrExpression>()
 
diff --git a/compiler/ir/backend.jvm/lower/src/org/jetbrains/kotlin/backend/jvm/lower/indy/LambdaMetafactoryArguments.kt b/compiler/ir/backend.jvm/lower/src/org/jetbrains/kotlin/backend/jvm/lower/indy/LambdaMetafactoryArguments.kt
index b395b2f5b35fe..358a0e467c010 100644
--- a/compiler/ir/backend.jvm/lower/src/org/jetbrains/kotlin/backend/jvm/lower/indy/LambdaMetafactoryArguments.kt
+++ b/compiler/ir/backend.jvm/lower/src/org/jetbrains/kotlin/backend/jvm/lower/indy/LambdaMetafactoryArguments.kt
@@ -91,9 +91,8 @@ internal class LambdaMetafactoryArgumentsBuilder(
         if (implFun.isInline)
             return null
 
-        if (implFun is IrConstructor && DescriptorVisibilities.isPrivate(implFun.visibility)) {
+        if (isConstructorRequiringAccessor(implFun)) {
             // Kotlin generates constructor accessors differently from Java.
-            // TODO more precise accessibility check (see SyntheticAccessorLowering::isAccessible)
             return null
         }
 
@@ -138,6 +137,15 @@ internal class LambdaMetafactoryArgumentsBuilder(
         return getLambdaMetafactoryArgsOrNullInner(reference, samMethod, samType, implFun)
     }
 
+    private fun isConstructorRequiringAccessor(implFun: IrFunction): Boolean {
+        if (implFun !is IrConstructor) return false
+        // We don't do exact accessibility check here:
+        // constructor will be called by a class generated by LambdaMetafactory at runtime.
+        val visibility = implFun.visibility
+        return visibility == DescriptorVisibilities.PROTECTED ||
+                DescriptorVisibilities.isPrivate(visibility)
+    }
+
     private val javaIoSerializableFqn =
         FqName("java.io").child(Name.identifier("Serializable"))
 
diff --git a/compiler/testData/codegen/box/invokedynamic/sam/functionRefToJavaInterface/kt49613.kt b/compiler/testData/codegen/box/invokedynamic/sam/functionRefToJavaInterface/kt49613.kt
new file mode 100644
index 0000000000000..7a207e0eb94d7
--- /dev/null
+++ b/compiler/testData/codegen/box/invokedynamic/sam/functionRefToJavaInterface/kt49613.kt
@@ -0,0 +1,28 @@
+// TARGET_BACKEND: JVM
+// JVM_TARGET: 1.8
+// SAM_CONVERSIONS: INDY
+// FILE: kt49613.kt
+
+interface GetStep {
+    fun get(): Any
+}
+
+class Outer protected constructor(val ok: Any) {
+    constructor(): this("xxx")
+
+    val obj = object : GetStep {
+        override fun get() = Step(::Outer)
+    }
+}
+
+fun box(): String {
+    val s = Outer().obj.get() as Step
+    val t = s.step("OK") as Outer
+    return t.ok as String
+}
+
+// FILE: Step.java
+
+public interface Step {
+    Object step(String string);
+}
\ No newline at end of file
diff --git a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/BlackBoxCodegenTestGenerated.java b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/BlackBoxCodegenTestGenerated.java
index c1d056cc82cfd..299e06b9c83a3 100644
--- a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/BlackBoxCodegenTestGenerated.java
+++ b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/BlackBoxCodegenTestGenerated.java
@@ -22214,6 +22214,12 @@ public void testKt46408() throws Exception {
                     runTest("compiler/testData/codegen/box/invokedynamic/sam/functionRefToJavaInterface/kt46408.kt");
                 }
 
+                @Test
+                @TestMetadata("kt49613.kt")
+                public void testKt49613() throws Exception {
+                    runTest("compiler/testData/codegen/box/invokedynamic/sam/functionRefToJavaInterface/kt49613.kt");
+                }
+
                 @Test
                 @TestMetadata("localFunction1.kt")
                 public void testLocalFunction1() throws Exception {
diff --git a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenTestGenerated.java b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenTestGenerated.java
index 585a5f64b4841..2e110981f6614 100644
--- a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenTestGenerated.java
+++ b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenTestGenerated.java
@@ -22346,6 +22346,12 @@ public void testKt46408() throws Exception {
                     runTest("compiler/testData/codegen/box/invokedynamic/sam/functionRefToJavaInterface/kt46408.kt");
                 }
 
+                @Test
+                @TestMetadata("kt49613.kt")
+                public void testKt49613() throws Exception {
+                    runTest("compiler/testData/codegen/box/invokedynamic/sam/functionRefToJavaInterface/kt49613.kt");
+                }
+
                 @Test
                 @TestMetadata("localFunction1.kt")
                 public void testLocalFunction1() throws Exception {
diff --git a/compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java b/compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java
index 14e966fb2a66f..2fc4223209214 100644
--- a/compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java
+++ b/compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java
@@ -18589,6 +18589,11 @@ public void testKt46408() throws Exception {
                     runTest("compiler/testData/codegen/box/invokedynamic/sam/functionRefToJavaInterface/kt46408.kt");
                 }
 
+                @TestMetadata("kt49613.kt")
+                public void testKt49613() throws Exception {
+                    runTest("compiler/testData/codegen/box/invokedynamic/sam/functionRefToJavaInterface/kt49613.kt");
+                }
+
                 @TestMetadata("localFunction1.kt")
                 public void testLocalFunction1() throws Exception {
                     runTest("compiler/testData/codegen/box/invokedynamic/sam/functionRefToJavaInterface/localFunction1.kt");