diff --git a/zanata-rest-client/src/main/java/org/zanata/rest/client/InvalidContentTypeFilter.java b/zanata-rest-client/src/main/java/org/zanata/rest/client/InvalidContentTypeFilter.java
index 273e2ada..780f0a19 100644
--- a/zanata-rest-client/src/main/java/org/zanata/rest/client/InvalidContentTypeFilter.java
+++ b/zanata-rest-client/src/main/java/org/zanata/rest/client/InvalidContentTypeFilter.java
@@ -50,9 +50,9 @@ public class InvalidContentTypeFilter extends ClientFilter {
                     "Please check the server URL is correct (in zanata.ini and in zanata.xml) and make sure you use the correct address.";
 
 
-    // we assume only xml or json are the valid types (wildcard type is also considered compatible)
+    // we assume application/* are all the valid types (wildcard type is also considered compatible)
     private static final Pattern VALID_TYPES_REGEX =
-            Pattern.compile("application/.*\\+?(\\*|xml|json)(;.*)?");
+            Pattern.compile("application/.*");
 
     @Override
     public ClientResponse handle(ClientRequest clientRequest)
diff --git a/zanata-rest-client/src/test/java/org/zanata/rest/client/InvalidContentTypeFilterTest.java b/zanata-rest-client/src/test/java/org/zanata/rest/client/InvalidContentTypeFilterTest.java
index 4de1f1ab..10e3dba2 100644
--- a/zanata-rest-client/src/test/java/org/zanata/rest/client/InvalidContentTypeFilterTest.java
+++ b/zanata-rest-client/src/test/java/org/zanata/rest/client/InvalidContentTypeFilterTest.java
@@ -49,7 +49,7 @@ public void testValidateContentTypes() {
         MatcherAssert.assertThat(
                 isContentTypeCompatible(
                                 MediaType.APPLICATION_FORM_URLENCODED_TYPE),
-                equalTo(false));
+                equalTo(true));
         MatcherAssert.assertThat(
                 isContentTypeCompatible(MediaType.MULTIPART_FORM_DATA_TYPE),
                 equalTo(false));
@@ -60,6 +60,10 @@ public void testValidateContentTypes() {
         MatcherAssert.assertThat(
                 isContentTypeCompatible(MediaType.APPLICATION_JSON_TYPE),
                 equalTo(true));
+
+        MatcherAssert.assertThat(
+                isContentTypeCompatible(MediaType.APPLICATION_OCTET_STREAM_TYPE),
+                equalTo(true));
         MatcherAssert.assertThat(
                 isContentTypeCompatible(MediaType.WILDCARD_TYPE),
                 equalTo(true));