diff --git a/compiler/testData/diagnostics/tests/samConversions/conversionOnLambdaAsLastExpression.fir.kt b/compiler/testData/diagnostics/tests/samConversions/conversionOnLambdaAsLastExpression.fir.kt
new file mode 100644
index 00000000000..5c8a950bbbc
--- /dev/null
+++ b/compiler/testData/diagnostics/tests/samConversions/conversionOnLambdaAsLastExpression.fir.kt
@@ -0,0 +1,18 @@
+// FILE: C.java
+
+public interface C { void on(String s); }
+
+// FILE: A.java
+
+public class A { void add(C c) {} }
+
+// FILE: test.kt
+
+class B : A() {
+    fun test(x: Any?) {
+        add(foo { <!TYPE_MISMATCH!>{ _ : String -> Unit }<!> })
+        add(x?.let { <!TYPE_MISMATCH!>{ _ : String -> Unit }<!> })
+    }
+}
+
+fun <T> foo(f: () -> T): T = f()
diff --git a/compiler/testData/diagnostics/tests/samConversions/conversionOnLambdaAsLastExpression.kt b/compiler/testData/diagnostics/tests/samConversions/conversionOnLambdaAsLastExpression.kt
index 0c48f1c94fd..07ada07330c 100644
--- a/compiler/testData/diagnostics/tests/samConversions/conversionOnLambdaAsLastExpression.kt
+++ b/compiler/testData/diagnostics/tests/samConversions/conversionOnLambdaAsLastExpression.kt
@@ -1,5 +1,3 @@
-// FIR_IDENTICAL
-
 // FILE: C.java
 
 public interface C { void on(String s); }