diff --git a/datamover/source/java/ch/systemsx/cisd/datamover/DataMover.java b/datamover/source/java/ch/systemsx/cisd/datamover/DataMover.java
index be8f5b7037305696c1fec9427fd253efd1608ff7..d5c2305dabb602ce922d3e12f25b27b7c9884844 100644
--- a/datamover/source/java/ch/systemsx/cisd/datamover/DataMover.java
+++ b/datamover/source/java/ch/systemsx/cisd/datamover/DataMover.java
@@ -343,12 +343,12 @@ public final class DataMover
                 {
                     if (prefixBeforeOrNull != null)
                     {
-                        operationLog.info(prefixBeforeOrNull + ": " + item);
+                        operationLog.info(prefixBeforeOrNull + " " + item);
                     }
                     originalHandler.handle(item);
                     if (prefixAfterOrNull != null)
                     {
-                        operationLog.info(prefixAfterOrNull + ": " + item);
+                        operationLog.info(prefixAfterOrNull + " " + item);
                     }
                 }