Index: jackrabbit-aws-ext/src/main/java/org/apache/jackrabbit/aws/ext/ds/S3Backend.java
===================================================================
--- jackrabbit-aws-ext/src/main/java/org/apache/jackrabbit/aws/ext/ds/S3Backend.java	(revision 1578145)
+++ jackrabbit-aws-ext/src/main/java/org/apache/jackrabbit/aws/ext/ds/S3Backend.java	(working copy)
@@ -112,8 +112,10 @@
         //over config provided via file based config
         if(this.properties != null){
             initProps = this.properties;
-        } else if (config == null) {
-            config = Utils.DEFAULT_CONFIG_FILE;
+        } else {
+            if (config == null) {
+                config = Utils.DEFAULT_CONFIG_FILE;
+            } 
             try{
                 initProps = Utils.readConfig(config);
             }catch(IOException e){