diff --git a/maven-plugin/src/main/java/io/confluent/kafka/schemaregistry/maven/UploadSchemaRegistryMojo.java b/maven-plugin/src/main/java/io/confluent/kafka/schemaregistry/maven/UploadSchemaRegistryMojo.java
index 2450e21f59f..c515d3205cd 100644
--- a/maven-plugin/src/main/java/io/confluent/kafka/schemaregistry/maven/UploadSchemaRegistryMojo.java
+++ b/maven-plugin/src/main/java/io/confluent/kafka/schemaregistry/maven/UploadSchemaRegistryMojo.java
@@ -53,7 +53,7 @@ public abstract class UploadSchemaRegistryMojo extends SchemaRegistryMojo {
   @Parameter(required = false)
   File outputDirectory;
 
-  @Parameter(required = true)
+  @Parameter(required = false)
   Map<String, File> subjects = new HashMap<>();
 
   @Parameter(required = false)