diff --git a/src/main/java/org/gcube/gcat/persistence/ckan/CKANPackage.java b/src/main/java/org/gcube/gcat/persistence/ckan/CKANPackage.java
index c8c3390..adf1cf5 100644
--- a/src/main/java/org/gcube/gcat/persistence/ckan/CKANPackage.java
+++ b/src/main/java/org/gcube/gcat/persistence/ckan/CKANPackage.java
@@ -258,7 +258,7 @@ public class CKANPackage extends CKAN {
 		}
 		parameters.put(START_KEY, String.valueOf(offset * limit));
 		
-		if(uriInfo!=null) {
+		if(uriInfo != null) {
 			MultivaluedMap<String,String> queryParameters = uriInfo.getQueryParameters();
 			parameters = checkListParameters(queryParameters, parameters);
 		}
@@ -268,25 +268,25 @@ public class CKANPackage extends CKAN {
 	
 	protected void checkOrganizationFilter(String q) {
 		Matcher m = ORGANIZATION_REGEX_PATTERN.matcher(q);
-
+		
 		List<String> matches = new ArrayList<>();
 		while(m.find()) {
 			matches.add(q.substring(m.start(), m.end()));
 		}
 		
-		if(matches.size()>0) {
+		if(matches.size() > 0) {
 			StringBuilder error = new StringBuilder();
 			error.append("Organization filters is constrained to VRE. ");
-			if(matches.size()>1) {
+			if(matches.size() > 1) {
 				error.append("Remove these filters ");
-			}else {
+			} else {
 				error.append("Remove this filter ");
 			}
 			boolean first = true;
 			for(String match : matches) {
 				if(!first) {
 					error.append(", ");
-				}else {
+				} else {
 					first = false;
 				}
 				error.append("[");
@@ -297,6 +297,9 @@ public class CKANPackage extends CKAN {
 		}
 	}
 	
+	protected static String[] allowedFilters = new String[] {"q", "fq", "fq_list", "sort", "facet", "facet.mincount",
+			"facet.limit", "facet.field", "include_drafts", "include_private", "ext_bbox", "fl"};
+	
 	protected Map<String,String> checkListParameters(MultivaluedMap<String,String> queryParameters,
 			Map<String,String> parameters) {
 		
@@ -332,14 +335,10 @@ public class CKANPackage extends CKAN {
 			// q=organization:nextnext
 		}
 		
-		for(String key : queryParameters.keySet()) {
-			// if 'rows' and 'start' are provided they replace the values imposed by caller
-			// provided limit and offset parameter which are the gCat interface are not passed to CKAN 
-			if(key.compareTo(GCatConstants.LIMIT_PARAMETER) == 0
-					|| key.compareTo(GCatConstants.OFFSET_PARAMETER) == 0) {
-				continue;
+		for(String key : allowedFilters) {
+			if(queryParameters.containsKey(key)) {
+				parameters.put(key, queryParameters.getFirst(key));
 			}
-			parameters.put(key, queryParameters.getFirst(key));
 		}
 		
 		// parameters.put(INCLUDE_PRIVATE_KEY, String.valueOf(true));