diff --git a/compiler/frontend/src/org/jetbrains/kotlin/contracts/EffectsExtractingVisitor.kt b/compiler/frontend/src/org/jetbrains/kotlin/contracts/EffectsExtractingVisitor.kt
index 519b73f6987..6d126942c58 100644
--- a/compiler/frontend/src/org/jetbrains/kotlin/contracts/EffectsExtractingVisitor.kt
+++ b/compiler/frontend/src/org/jetbrains/kotlin/contracts/EffectsExtractingVisitor.kt
@@ -38,6 +38,7 @@ import org.jetbrains.kotlin.resolve.calls.smartcasts.DataFlowValue
 import org.jetbrains.kotlin.resolve.calls.smartcasts.DataFlowValueFactory
 import org.jetbrains.kotlin.resolve.calls.tasks.ExplicitReceiverKind
 import org.jetbrains.kotlin.resolve.constants.CompileTimeConstant
+import org.jetbrains.kotlin.resolve.constants.UnsignedErrorValueTypeConstant
 import org.jetbrains.kotlin.resolve.scopes.receivers.ExpressionReceiver
 import org.jetbrains.kotlin.resolve.scopes.receivers.ReceiverValue
 import org.jetbrains.kotlin.types.KotlinType
@@ -95,6 +96,8 @@ class EffectsExtractingVisitor(
 
         val compileTimeConstant: CompileTimeConstant<*> =
             bindingContext.get(BindingContext.COMPILE_TIME_VALUE, expression) ?: return UNKNOWN_COMPUTATION
+        if (compileTimeConstant.isError || compileTimeConstant is UnsignedErrorValueTypeConstant) return UNKNOWN_COMPUTATION
+
         val value: Any? = compileTimeConstant.getValue(type)
 
         return when (value) {