diff --git a/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/diagnostics/KotlinToolingDiagnostics.kt b/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/diagnostics/KotlinToolingDiagnostics.kt
index 729ea3b6095..47d08f229ba 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/diagnostics/KotlinToolingDiagnostics.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/diagnostics/KotlinToolingDiagnostics.kt
@@ -47,7 +47,7 @@ object KotlinToolingDiagnostics {
         )
     }
 
-    object DeprecatedJvmWithJavaPresetDiagnostic : ToolingDiagnosticFactory(WARNING) {
+    object DeprecatedJvmWithJavaPresetDiagnostic : ToolingDiagnosticFactory(ERROR) {
         operator fun invoke() = build(
             """
                 The 'jvmWithJava' preset is deprecated and will be removed soon. Please use an ordinary JVM target with Java support: 
diff --git a/libraries/tools/kotlin-gradle-plugin/src/functionalTest/resources/expectedDiagnostics/deprecatedJvmWithJavaPreset.txt b/libraries/tools/kotlin-gradle-plugin/src/functionalTest/resources/expectedDiagnostics/deprecatedJvmWithJavaPreset.txt
index 5d0b68126bb..fb6c854a8cc 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/functionalTest/resources/expectedDiagnostics/deprecatedJvmWithJavaPreset.txt
+++ b/libraries/tools/kotlin-gradle-plugin/src/functionalTest/resources/expectedDiagnostics/deprecatedJvmWithJavaPreset.txt
@@ -1,4 +1,4 @@
-[DeprecatedJvmWithJavaPresetDiagnostic | WARNING] The 'jvmWithJava' preset is deprecated and will be removed soon. Please use an ordinary JVM target with Java support:
+[DeprecatedJvmWithJavaPresetDiagnostic | ERROR] The 'jvmWithJava' preset is deprecated and will be removed soon. Please use an ordinary JVM target with Java support:
 
     kotlin {
         jvm {