diff --git a/compiler/plugin-api/src/org/jetbrains/kotlin/compiler/plugin/CommandLineProcessor.kt b/compiler/plugin-api/src/org/jetbrains/kotlin/compiler/plugin/CommandLineProcessor.kt
index d68212b1fd5..61c5341e1fb 100644
--- a/compiler/plugin-api/src/org/jetbrains/kotlin/compiler/plugin/CommandLineProcessor.kt
+++ b/compiler/plugin-api/src/org/jetbrains/kotlin/compiler/plugin/CommandLineProcessor.kt
@@ -34,4 +34,8 @@ public trait CommandLineProcessor {
 
     [throws(javaClass<CliOptionProcessingException>())]
     public fun processOption(option: CliOption, value: String, configuration: CompilerConfiguration)
+}
+
+public fun getPluginOptionString(pluginId: String, key: String, value: String): String {
+    return "plugin:$pluginId:$key=$value"
 }
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