diff --git a/samples/client/petstore/java/src/main/java/com/wordnik/client/ApiInvoker.java b/samples/client/petstore/java/src/main/java/com/wordnik/client/ApiInvoker.java
index 2e1dff71027..de64ba9f1e7 100644
--- a/samples/client/petstore/java/src/main/java/com/wordnik/client/ApiInvoker.java
+++ b/samples/client/petstore/java/src/main/java/com/wordnik/client/ApiInvoker.java
@@ -125,7 +125,7 @@ public class ApiInvoker {
       throw new ApiException(500, "unknown method type " + method);
     }
     if(response.getClientResponseStatus() == ClientResponse.Status.NO_CONTENT) {
-	return null;
+      return null;
     }
     else if(response.getClientResponseStatus().getFamily() == Family.SUCCESSFUL) {
       return (String) response.getEntity(String.class);
diff --git a/src/main/resources/Java/apiInvoker.mustache b/src/main/resources/Java/apiInvoker.mustache
index f755728ffa5..bdeb632f740 100644
--- a/src/main/resources/Java/apiInvoker.mustache
+++ b/src/main/resources/Java/apiInvoker.mustache
@@ -125,7 +125,7 @@ public class ApiInvoker {
       throw new ApiException(500, "unknown method type " + method);
     }
     if(response.getClientResponseStatus() == ClientResponse.Status.NO_CONTENT) {
-	return null;
+      return null;
     }
     else if(response.getClientResponseStatus().getFamily() == Family.SUCCESSFUL) {
       return (String) response.getEntity(String.class);