diff --git a/apis/sts/src/main/java/org/jclouds/aws/filters/FormSignerV4.java b/apis/sts/src/main/java/org/jclouds/aws/filters/FormSignerV4.java
index 7dfbd12ebd..ca58fb0a33 100644
--- a/apis/sts/src/main/java/org/jclouds/aws/filters/FormSignerV4.java
+++ b/apis/sts/src/main/java/org/jclouds/aws/filters/FormSignerV4.java
@@ -84,7 +84,6 @@ public final class FormSignerV4 implements FormSigner {
 
          /** This will only work for amazon deployments, and perhaps not all of them. */
          private static List<String> parseServiceAndRegion(String host) {
-            checkArgument(host.endsWith(".amazonaws.com"), "Only AWS endpoints currently supported %s", host);
             return Splitter.on('.').splitToList(host);
          }
       }