diff --git a/src/main/java/de/mpg/imeji/logic/statistic/StatisticsService.java b/src/main/java/de/mpg/imeji/logic/statistic/StatisticsService.java
index 810d5b0f2..d96e62086 100644
--- a/src/main/java/de/mpg/imeji/logic/statistic/StatisticsService.java
+++ b/src/main/java/de/mpg/imeji/logic/statistic/StatisticsService.java
@@ -2,12 +2,15 @@
 
 import java.util.List;
 
+import de.mpg.imeji.logic.export.ZIPExport;
 import de.mpg.imeji.logic.model.User;
 import de.mpg.imeji.logic.search.Search;
 import de.mpg.imeji.logic.search.Search.SearchObjectTypes;
 import de.mpg.imeji.logic.search.jenasearch.JenaCustomQueries;
 import de.mpg.imeji.logic.search.jenasearch.JenaSearch;
 import de.mpg.imeji.logic.security.user.util.QuotaUtil;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 
 /**
  * Controller for all actions which are related to statistics
@@ -17,6 +20,7 @@
  */
 public class StatisticsService {
 
+  private static final Logger LOGGER = LogManager.getLogger(StatisticsService.class);
   /**
    * Return the all institute names (define by the suffix of emails users)
    *
@@ -39,8 +43,9 @@ public long getUsedStorageSizeForInstitute(String instituteName) {
     final Search s = new JenaSearch(SearchObjectTypes.ALL, null);
     final List<String> result = s.searchString(JenaCustomQueries.selectInstituteFileSize(instituteName), null, null,
         Search.SEARCH_FROM_START_INDEX, Search.GET_ALL_RESULTS).getResults();
+    LOGGER.info(result);
     if (result.size() == 1 && result.get(0) != null) {
-      final String size = result.get(0).replace("^^http://www.w3.org/2001/XMLSchema#integer", "");
+      final String size = result.get(0).replace("^^xsd:integer", "").replace("\"","");
       return Long.parseLong(size);
     }
     return 0;
@@ -52,7 +57,7 @@ public long getAllFileSize() {
         s.searchString(JenaCustomQueries.selectFileSizeForAll(), null, null, Search.SEARCH_FROM_START_INDEX, Search.GET_ALL_RESULTS)
             .getResults();
     if (result.size() == 1 && result.get(0) != null) {
-      final String size = result.get(0).replace("^^http://www.w3.org/2001/XMLSchema#integer", "");
+      final String size = result.get(0).replace("^^xsd:integer", "").replace("\"","");;
       return Long.parseLong(size);
     }
     return 0;