diff --git a/core/src/main/groovy/com/muwire/core/download/Downloader.groovy b/core/src/main/groovy/com/muwire/core/download/Downloader.groovy
index 3a823f22..eefae21a 100644
--- a/core/src/main/groovy/com/muwire/core/download/Downloader.groovy
+++ b/core/src/main/groovy/com/muwire/core/download/Downloader.groovy
@@ -145,6 +145,15 @@ public class Downloader {
         }
     }
     
+    public int activeWorkers() {
+        int active = 0
+        activeWorkers.values().each { 
+            if (it.currentState != WorkerState.FINISHED)
+                active++
+        }
+        active
+    }
+    
     public void resume() {
         downloadManager.resume(this)
     }
diff --git a/gui/griffon-app/views/com/muwire/gui/MainFrameView.groovy b/gui/griffon-app/views/com/muwire/gui/MainFrameView.groovy
index a922fbc7..5b47ee88 100644
--- a/gui/griffon-app/views/com/muwire/gui/MainFrameView.groovy
+++ b/gui/griffon-app/views/com/muwire/gui/MainFrameView.groovy
@@ -105,7 +105,7 @@ class MainFrameView {
                                                 int done = row.downloader.donePieces()
                                                 "$done/$pieces pieces"
                                             })
-                                            closureColumn(header: "Sources", preferredWidth : 10, type: Integer, read : {row -> row.downloader.activeWorkers.size()})
+                                            closureColumn(header: "Sources", preferredWidth : 10, type: Integer, read : {row -> row.downloader.activeWorkers()})
                                             closureColumn(header: "Speed", preferredWidth: 50, type:String, read :{row -> 
                                                 DataHelper.formatSize2Decimal(row.downloader.speed(), false) + "B/sec"
                                             })