diff --git a/src/main/java/com/phonedeck/gcm4j/DefaultGcm.java b/src/main/java/com/phonedeck/gcm4j/DefaultGcm.java
index <HASH>..<HASH> 100644
--- a/src/main/java/com/phonedeck/gcm4j/DefaultGcm.java
+++ b/src/main/java/com/phonedeck/gcm4j/DefaultGcm.java
@@ -92,7 +92,6 @@ public class DefaultGcm implements Gcm {
     private static ObjectMapper createObjectMapper() {
         ObjectMapper objectMapper = new ObjectMapper();
         objectMapper.setSerializationInclusion(Include.NON_DEFAULT);
-        objectMapper.enable(SerializationFeature.INDENT_OUTPUT);
         return objectMapper;
     }
Ensure whitespace is removed when marshalling to send to Gcm.