diff --git a/java/kotlin.go b/java/kotlin.go
index 1b2e642..9c47f98 100644
--- a/java/kotlin.go
+++ b/java/kotlin.go
@@ -121,7 +121,7 @@
 
 	kaptProcessor := ""
 	if flags.processor != "" {
-		kaptProcessor = "-P plugin:org.jetbrains.kotlin.kapt3:processor=" + flags.processor
+		kaptProcessor = "-P plugin:org.jetbrains.kotlin.kapt3:processors=" + flags.processor
 	}
 
 	encodedJavacFlags := kaptEncodeFlags([][2]string{