diff --git a/compiler/frontend/src/org/jetbrains/kotlin/diagnostics/diagnosticUtils.kt b/compiler/frontend/src/org/jetbrains/kotlin/diagnostics/diagnosticUtils.kt
index d58a8c0baed..ee31a59e133 100644
--- a/compiler/frontend/src/org/jetbrains/kotlin/diagnostics/diagnosticUtils.kt
+++ b/compiler/frontend/src/org/jetbrains/kotlin/diagnostics/diagnosticUtils.kt
@@ -39,6 +39,7 @@ import org.jetbrains.kotlin.resolve.calls.model.VariableAsFunctionResolvedCall
 import org.jetbrains.kotlin.types.KotlinType
 import org.jetbrains.kotlin.types.TypeConstructorSubstitution
 import org.jetbrains.kotlin.types.TypeUtils
+import org.jetbrains.kotlin.types.TypeUtils.noExpectedType
 import org.jetbrains.kotlin.types.typeUtil.isAnyOrNullableAny
 import org.jetbrains.kotlin.types.typeUtil.isNothing
 import org.jetbrains.kotlin.types.typeUtil.isNullableNothing
@@ -48,7 +49,11 @@ fun ResolutionContext<*>.reportTypeMismatchDueToTypeProjection(
     expectedType: KotlinType,
     expressionType: KotlinType?
 ): Boolean {
-    if (!TypeUtils.contains(expectedType) { it.isAnyOrNullableAny() || it.isNothing() || it.isNullableNothing() }) return false
+    if (!TypeUtils.contains(expectedType) {
+            // We have to check expected type is available otherwise we'll get an exception
+            !noExpectedType(it) && (it.isAnyOrNullableAny() || it.isNothing() || it.isNullableNothing())
+        }
+    ) return false
 
     val (resolvedCall, correspondingNotApproximatedTypeByDescriptor: (CallableDescriptor) -> KotlinType?) = when (callPosition) {
         is CallPosition.ValueArgumentPosition ->
diff --git a/compiler/frontend/src/org/jetbrains/kotlin/resolve/calls/tower/ResolvedAtomCompleter.kt b/compiler/frontend/src/org/jetbrains/kotlin/resolve/calls/tower/ResolvedAtomCompleter.kt
index 231c6ee469b..964b85320f5 100644
--- a/compiler/frontend/src/org/jetbrains/kotlin/resolve/calls/tower/ResolvedAtomCompleter.kt
+++ b/compiler/frontend/src/org/jetbrains/kotlin/resolve/calls/tower/ResolvedAtomCompleter.kt
@@ -330,7 +330,10 @@ class ResolvedAtomCompleter(
         }
 
         val descriptor = topLevelTrace.bindingContext.get(BindingContext.FUNCTION, ktFunction) as? SimpleFunctionDescriptorImpl
-            ?: throw AssertionError("No function descriptor for resolved lambda argument")
+            ?:
+            // Normally we should not be here, but in IDE partial resolve mode lambda analysis can be dropped,
+            // and it's possible we don't have any descriptor
+            return
 
         val substitutedLambdaTypes = substituteFunctionLiteralDescriptor(lambda, descriptor, resultSubstitutor)