1 files changed, 2 insertions, 1 deletions

diff --git a/src/uk/ac/ox/cs/pagoda/Pagoda.java b/src/uk/ac/ox/cs/pagoda/Pagoda.java
index ace6851..6a1946e 100644
--- a/src/uk/ac/ox/cs/pagoda/Pagoda.java
+++ b/src/uk/ac/ox/cs/pagoda/Pagoda.java
@@ -160,7 +160,8 @@ public class Pagoda implements Runnable {
     private String getStatisticsFilename(PagodaProperties properties, String queryFile) {
         String statisticsFilename = "statistics";
         statisticsFilename += "_" + FilenameUtils.removeExtension(FilenameUtils.getName(properties.getOntologyPath().replaceAll("_", "-")));
-        statisticsFilename += "_" + FilenameUtils.removeExtension(FilenameUtils.getName(properties.getDataPath().replaceAll("_", "-")));
+        if(properties.getDataPath() != null)
+            statisticsFilename += "_" + FilenameUtils.removeExtension(FilenameUtils.getName(properties.getDataPath().replaceAll("_", "-")));
         statisticsFilename += "_" + FilenameUtils.removeExtension(FilenameUtils.getName(queryFile).replaceAll("_", "-"));
         statisticsFilename += "_" + ((properties.getSkolemUpperBound() == PagodaProperties.SkolemUpperBoundOptions.DISABLED)
                 ? "" : (properties.getSkolemUpperBound() == PagodaProperties.SkolemUpperBoundOptions.BEFORE_SUMMARISATION)