diff --git a/RTCP/Storage/src/MSWriterDAL.cc b/RTCP/Storage/src/MSWriterDAL.cc
index 4f53d09eca44f76e2ad6e6be5da2c85189a6bf95..488295b4e99ae558f26833d528b8ebd0f5c3baae 100644
--- a/RTCP/Storage/src/MSWriterDAL.cc
+++ b/RTCP/Storage/src/MSWriterDAL.cc
@@ -373,8 +373,8 @@ namespace LOFAR
       beam.foldPeriodUnit()         .value = "s";
 
       beam.dedispersion()           .value = DM == 0.0 ? "NONE" : "COHERENT";
-      beam.dedispersionMeasure()    .value = DM;
-      beam.dedispersionMeasureUnit().value = "pc/cm^3";
+      beam.dispersionMeasure()      .value = DM;
+      beam.dispersionMeasureUnit()  .value = "pc/cm^3";
 
       beam.barycentered()           .value = false;