diff --git a/symmetric-assemble/common.gradle b/symmetric-assemble/common.gradle
index ed1af74107..7c93c5ef9e 100644
--- a/symmetric-assemble/common.gradle
+++ b/symmetric-assemble/common.gradle
@@ -242,7 +242,8 @@ subprojects { subproject ->
         provided "org.apache.avro:avro:1.8.2"
 		provided ("io.confluent:kafka-avro-serializer:3.2.1") {
 			exclude group: 'com.fasterxml.jackson.core'
-        	}
+            exclude group: 'org.slf4j'
+        }
 		
         testCompile fileTree(dir: System.getProperty("user.home") + '/.symmetricds/lib', include: '*.jar')
         testCompile "junit:junit:$junitVersion"