diff --git a/CEP/BB/MS/src/makems.cc b/CEP/BB/MS/src/makems.cc
index d27a70d9b2c97f2dc226d1e97220a146377873b1..7829a09a0529281d88b23f3a453cfbba932a9b40 100644
--- a/CEP/BB/MS/src/makems.cc
+++ b/CEP/BB/MS/src/makems.cc
@@ -165,7 +165,7 @@ void doMaster (bool send)
   // Get the station info from the given antenna table.
   string msName = params.getString ("MSName");
   string tabName = params.getString ("AntennaTableName");
-  Table tab(tabName);
+  Table tab(tabName, TableLock(TableLock::AutoNoReadLocking));
   ROArrayColumn<double> posCol(tab, "POSITION");
   Array<double> antPos = posCol.getColumn();