diff --git a/libraries/scripting/common/src/kotlin/script/experimental/api/errorHandling.kt b/libraries/scripting/common/src/kotlin/script/experimental/api/errorHandling.kt
index bc3af7fd340..9345f2eae73 100644
--- a/libraries/scripting/common/src/kotlin/script/experimental/api/errorHandling.kt
+++ b/libraries/scripting/common/src/kotlin/script/experimental/api/errorHandling.kt
@@ -13,7 +13,7 @@ data class ScriptDiagnostic(
     val location: ScriptSource.Location? = null,
     val exception: Throwable? = null
 ) {
-    enum class Severity { ERROR, WARNING, INFO, DEBUG }
+    enum class Severity { FATAL, ERROR, WARNING, INFO, DEBUG }
 }
 
 sealed class ResultWithDiagnostics<out R> {
diff --git a/libraries/scripting/jvm/src/kotlin/script/experimental/jvm/jvmScriptUtil.kt b/libraries/scripting/jvm/src/kotlin/script/experimental/jvm/jvmScriptUtil.kt
index c7bfe8b23d5..850b5a4a9ee 100644
--- a/libraries/scripting/jvm/src/kotlin/script/experimental/jvm/jvmScriptUtil.kt
+++ b/libraries/scripting/jvm/src/kotlin/script/experimental/jvm/jvmScriptUtil.kt
@@ -21,6 +21,7 @@ fun mapLegacyDiagnosticSeverity(severity: ScriptDependenciesResolver.ReportSever
 }
 
 fun mapToLegacyScriptReportSeverity(severity: ScriptDiagnostic.Severity): ScriptReport.Severity = when (severity) {
+    ScriptDiagnostic.Severity.FATAL -> ScriptReport.Severity.FATAL
     ScriptDiagnostic.Severity.ERROR -> ScriptReport.Severity.ERROR
     ScriptDiagnostic.Severity.WARNING -> ScriptReport.Severity.WARNING
     ScriptDiagnostic.Severity.INFO -> ScriptReport.Severity.INFO