diff --git a/compiler/fir/fir2ir/tests/org/jetbrains/kotlin/codegen/ir/FirBlackBoxCodegenTestGenerated.java b/compiler/fir/fir2ir/tests/org/jetbrains/kotlin/codegen/ir/FirBlackBoxCodegenTestGenerated.java
index d44c6e6d447..1c0070cb1d1 100644
--- a/compiler/fir/fir2ir/tests/org/jetbrains/kotlin/codegen/ir/FirBlackBoxCodegenTestGenerated.java
+++ b/compiler/fir/fir2ir/tests/org/jetbrains/kotlin/codegen/ir/FirBlackBoxCodegenTestGenerated.java
@@ -12409,6 +12409,11 @@ public class FirBlackBoxCodegenTestGenerated extends AbstractFirBlackBoxCodegenT
             runTest("compiler/testData/codegen/box/inference/lastExpressionOfLambdaWithNothingConstraint.kt");
         }
 
+        @TestMetadata("plusAssignInsideLambda.kt")
+        public void testPlusAssignInsideLambda() throws Exception {
+            runTest("compiler/testData/codegen/box/inference/plusAssignInsideLambda.kt");
+        }
+
         @TestMetadata("unsafeVarianceCodegen.kt")
         public void testUnsafeVarianceCodegen() throws Exception {
             runTest("compiler/testData/codegen/box/inference/unsafeVarianceCodegen.kt");
diff --git a/compiler/frontend/src/org/jetbrains/kotlin/types/expressions/ExpressionTypingVisitorForStatements.java b/compiler/frontend/src/org/jetbrains/kotlin/types/expressions/ExpressionTypingVisitorForStatements.java
index 0ceb58308dc..57197099865 100644
--- a/compiler/frontend/src/org/jetbrains/kotlin/types/expressions/ExpressionTypingVisitorForStatements.java
+++ b/compiler/frontend/src/org/jetbrains/kotlin/types/expressions/ExpressionTypingVisitorForStatements.java
@@ -248,7 +248,7 @@ public class ExpressionTypingVisitorForStatements extends ExpressionTypingVisito
             // Check for '+'
             // We should clear calls info for coroutine inference within right side as here we analyze it a second time in another context
             if (context.inferenceSession instanceof CoroutineInferenceSession) {
-                ((CoroutineInferenceSession) context.inferenceSession).clearCallsInfoByContainingElement(expression);
+                ((CoroutineInferenceSession) context.inferenceSession).clearCallsInfoByContainingElement(right);
             }
             Name counterpartName = OperatorConventions.BINARY_OPERATION_NAMES.get(OperatorConventions.ASSIGNMENT_OPERATION_COUNTERPARTS.get(operationType));
             binaryOperationDescriptors = components.callResolver.resolveBinaryCall(
diff --git a/compiler/testData/codegen/box/inference/plusAssignInsideLambda.kt b/compiler/testData/codegen/box/inference/plusAssignInsideLambda.kt
new file mode 100644
index 00000000000..b6d4ea8c3ec
--- /dev/null
+++ b/compiler/testData/codegen/box/inference/plusAssignInsideLambda.kt
@@ -0,0 +1,22 @@
+// WITH_RUNTIME
+
+import kotlin.experimental.ExperimentalTypeInference
+
+interface SendChannel<in T> {
+    suspend fun send(value: T)
+}
+
+@OptIn(ExperimentalTypeInference::class)
+public fun <T> flux(@BuilderInference block: suspend SendChannel<T>.() -> Unit) {}
+
+suspend inline fun <T> T.collect(action: (T) -> Unit) { action(this) }
+
+fun test() {
+    flux {
+        var result = ""
+        "OK".collect { result += it }
+        send(result)
+    }
+}
+
+fun box() = "OK"
\ No newline at end of file
diff --git a/compiler/tests/org/jetbrains/kotlin/codegen/BlackBoxCodegenTestGenerated.java b/compiler/tests/org/jetbrains/kotlin/codegen/BlackBoxCodegenTestGenerated.java
index b1162db9ccc..b1b68c4e73f 100644
--- a/compiler/tests/org/jetbrains/kotlin/codegen/BlackBoxCodegenTestGenerated.java
+++ b/compiler/tests/org/jetbrains/kotlin/codegen/BlackBoxCodegenTestGenerated.java
@@ -13629,6 +13629,11 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             runTest("compiler/testData/codegen/box/inference/lastExpressionOfLambdaWithNothingConstraint.kt");
         }
 
+        @TestMetadata("plusAssignInsideLambda.kt")
+        public void testPlusAssignInsideLambda() throws Exception {
+            runTest("compiler/testData/codegen/box/inference/plusAssignInsideLambda.kt");
+        }
+
         @TestMetadata("unsafeVarianceCodegen.kt")
         public void testUnsafeVarianceCodegen() throws Exception {
             runTest("compiler/testData/codegen/box/inference/unsafeVarianceCodegen.kt");
diff --git a/compiler/tests/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java b/compiler/tests/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java
index dca4410700d..79f34828c87 100644
--- a/compiler/tests/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java
+++ b/compiler/tests/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java
@@ -13629,6 +13629,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
             runTest("compiler/testData/codegen/box/inference/lastExpressionOfLambdaWithNothingConstraint.kt");
         }
 
+        @TestMetadata("plusAssignInsideLambda.kt")
+        public void testPlusAssignInsideLambda() throws Exception {
+            runTest("compiler/testData/codegen/box/inference/plusAssignInsideLambda.kt");
+        }
+
         @TestMetadata("unsafeVarianceCodegen.kt")
         public void testUnsafeVarianceCodegen() throws Exception {
             runTest("compiler/testData/codegen/box/inference/unsafeVarianceCodegen.kt");
diff --git a/compiler/tests/org/jetbrains/kotlin/codegen/ir/IrBlackBoxCodegenTestGenerated.java b/compiler/tests/org/jetbrains/kotlin/codegen/ir/IrBlackBoxCodegenTestGenerated.java
index be935938bf7..1ac47eb03e9 100644
--- a/compiler/tests/org/jetbrains/kotlin/codegen/ir/IrBlackBoxCodegenTestGenerated.java
+++ b/compiler/tests/org/jetbrains/kotlin/codegen/ir/IrBlackBoxCodegenTestGenerated.java
@@ -12409,6 +12409,11 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             runTest("compiler/testData/codegen/box/inference/lastExpressionOfLambdaWithNothingConstraint.kt");
         }
 
+        @TestMetadata("plusAssignInsideLambda.kt")
+        public void testPlusAssignInsideLambda() throws Exception {
+            runTest("compiler/testData/codegen/box/inference/plusAssignInsideLambda.kt");
+        }
+
         @TestMetadata("unsafeVarianceCodegen.kt")
         public void testUnsafeVarianceCodegen() throws Exception {
             runTest("compiler/testData/codegen/box/inference/unsafeVarianceCodegen.kt");
diff --git a/js/js.tests/test/org/jetbrains/kotlin/js/test/es6/semantics/IrJsCodegenBoxES6TestGenerated.java b/js/js.tests/test/org/jetbrains/kotlin/js/test/es6/semantics/IrJsCodegenBoxES6TestGenerated.java
index 2928d865838..89fc1381aa5 100644
--- a/js/js.tests/test/org/jetbrains/kotlin/js/test/es6/semantics/IrJsCodegenBoxES6TestGenerated.java
+++ b/js/js.tests/test/org/jetbrains/kotlin/js/test/es6/semantics/IrJsCodegenBoxES6TestGenerated.java
@@ -10674,6 +10674,11 @@ public class IrJsCodegenBoxES6TestGenerated extends AbstractIrJsCodegenBoxES6Tes
             runTest("compiler/testData/codegen/box/inference/lastExpressionOfLambdaWithNothingConstraint.kt");
         }
 
+        @TestMetadata("plusAssignInsideLambda.kt")
+        public void testPlusAssignInsideLambda() throws Exception {
+            runTest("compiler/testData/codegen/box/inference/plusAssignInsideLambda.kt");
+        }
+
         @TestMetadata("unsafeVarianceCodegen.kt")
         public void testUnsafeVarianceCodegen() throws Exception {
             runTest("compiler/testData/codegen/box/inference/unsafeVarianceCodegen.kt");
diff --git a/js/js.tests/test/org/jetbrains/kotlin/js/test/ir/semantics/IrJsCodegenBoxTestGenerated.java b/js/js.tests/test/org/jetbrains/kotlin/js/test/ir/semantics/IrJsCodegenBoxTestGenerated.java
index 72318fd4561..f29e7f54eca 100644
--- a/js/js.tests/test/org/jetbrains/kotlin/js/test/ir/semantics/IrJsCodegenBoxTestGenerated.java
+++ b/js/js.tests/test/org/jetbrains/kotlin/js/test/ir/semantics/IrJsCodegenBoxTestGenerated.java
@@ -10684,6 +10684,11 @@ public class IrJsCodegenBoxTestGenerated extends AbstractIrJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/inference/lastExpressionOfLambdaWithNothingConstraint.kt");
         }
 
+        @TestMetadata("plusAssignInsideLambda.kt")
+        public void testPlusAssignInsideLambda() throws Exception {
+            runTest("compiler/testData/codegen/box/inference/plusAssignInsideLambda.kt");
+        }
+
         @TestMetadata("unsafeVarianceCodegen.kt")
         public void testUnsafeVarianceCodegen() throws Exception {
             runTest("compiler/testData/codegen/box/inference/unsafeVarianceCodegen.kt");
diff --git a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/JsCodegenBoxTestGenerated.java b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/JsCodegenBoxTestGenerated.java
index f0b653f3c12..4caf0e9c4bf 100644
--- a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/JsCodegenBoxTestGenerated.java
+++ b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/JsCodegenBoxTestGenerated.java
@@ -10749,6 +10749,11 @@ public class JsCodegenBoxTestGenerated extends AbstractJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/inference/lastExpressionOfLambdaWithNothingConstraint.kt");
         }
 
+        @TestMetadata("plusAssignInsideLambda.kt")
+        public void testPlusAssignInsideLambda() throws Exception {
+            runTest("compiler/testData/codegen/box/inference/plusAssignInsideLambda.kt");
+        }
+
         @TestMetadata("unsafeVarianceCodegen.kt")
         public void testUnsafeVarianceCodegen() throws Exception {
             runTest("compiler/testData/codegen/box/inference/unsafeVarianceCodegen.kt");