diff --git a/source/de/anomic/yacy/yacyCore.java b/source/de/anomic/yacy/yacyCore.java
index e9ef43bb0..0cbe8126f 100644
--- a/source/de/anomic/yacy/yacyCore.java
+++ b/source/de/anomic/yacy/yacyCore.java
@@ -419,7 +419,10 @@ public class yacyCore {
             int i = 0;
             while (si. hasNext()) {
                 seed = (yacySeed) si.next();
-                if (seed == null) { continue; }
+                if (seed == null) {
+                    sync.P();
+                    continue;
+                }
                 i++;
 
                 final String address = seed.getClusterAddress();