diff --git a/java/kotlin.go b/java/kotlin.go
index cb7da20..9b160a0 100644
--- a/java/kotlin.go
+++ b/java/kotlin.go
@@ -136,8 +136,11 @@
 	kaptProcessorPath := flags.processorPath.FormRepeatedClassPath("-P plugin:org.jetbrains.kotlin.kapt3:apclasspath=")
 
 	kaptProcessor := ""
-	if flags.processor != "" {
-		kaptProcessor = "-P plugin:org.jetbrains.kotlin.kapt3:processors=" + flags.processor
+	for i, p := range flags.processors {
+		if i > 0 {
+			kaptProcessor += " "
+		}
+		kaptProcessor += "-P plugin:org.jetbrains.kotlin.kapt3:processors=" + p
 	}
 
 	encodedJavacFlags := kaptEncodeFlags([][2]string{