diff --git a/webconsole/src/main/java/org/apache/felix/webconsole/internal/configuration/ConfigManager.java b/webconsole/src/main/java/org/apache/felix/webconsole/internal/configuration/ConfigManager.java
index c818b87..0cc826e 100644
--- a/webconsole/src/main/java/org/apache/felix/webconsole/internal/configuration/ConfigManager.java
+++ b/webconsole/src/main/java/org/apache/felix/webconsole/internal/configuration/ConfigManager.java
@@ -164,8 +164,9 @@
             }
             else
             {
-                response.setContentType("text/plain"); //$NON-NLS-1$
-                response.getWriter().print("true"); //$NON-NLS-1$
+                response.setContentType( "application/json" ); //$NON-NLS-1$
+                response.setCharacterEncoding( "UTF-8" ); //$NON-NLS-1$
+                response.getWriter().print( "{ \"status\": true }" ); //$NON-NLS-1$
             }
 
             return;
diff --git a/webconsole/src/main/resources/res/ui/config.js b/webconsole/src/main/resources/res/ui/config.js
index 54d0868..af2f43b 100644
--- a/webconsole/src/main/resources/res/ui/config.js
+++ b/webconsole/src/main/resources/res/ui/config.js
@@ -439,7 +439,7 @@
 function deleteConfig(/* String */ configId, /* String */ bundleLocation)
 {
     if ( configConfirm(i18n.del_ask, configId, bundleLocation) ) {
-	$.post(pluginRoot + '/' + configId, param.apply + '=1&' + param.dele + '=1', null, function() {
+	$.post(pluginRoot + '/' + configId, param.apply + '=1&' + param.dele + '=1', function() {
 	    document.location.href = pluginRoot;
 	}, 'json');
 	return true;
@@ -450,7 +450,7 @@
 function unbindConfig(/* String */ configId, /* String */ bundleLocation)
 {
     if ( configConfirm(i18n.unbind_ask, configId, bundleLocation) ) {
-	$.post(pluginRoot + '/' + configId, param.unbind + '=1', null, function() {
+	$.post(pluginRoot + '/' + configId, param.unbind + '=1', function() {
 	    document.location.href = pluginRoot + '/' + configId;
 	}, 'json');
 	return true;