diff --git a/CEP/DP3/DPPP/include/DPPP/PhaseShift.h b/CEP/DP3/DPPP/include/DPPP/PhaseShift.h
index 8220610a6daddc6bbf4d26443093787684dd5c5e..5f525800625ab230d68b3a88f74fd464a02db35e 100644
--- a/CEP/DP3/DPPP/include/DPPP/PhaseShift.h
+++ b/CEP/DP3/DPPP/include/DPPP/PhaseShift.h
@@ -79,7 +79,7 @@ namespace LOFAR {
     private:
       // Interpret the phase center specification.
       // Currently only J2000 RA and DEC can be given.
-      casa::MDirection PhaseShift::handleCenter();
+      casa::MDirection handleCenter();
       
       //# Data members.
       DPInput*          itsInput;