diff --git a/Code/Projections/otbGenericRSTransform.txx b/Code/Projections/otbGenericRSTransform.txx
index b7dc6ea98cb575bee34f29ede7e2ea64ec4bfa45..3c0e2904c60c06c1ec083413b258b808c954dfff 100644
--- a/Code/Projections/otbGenericRSTransform.txx
+++ b/Code/Projections/otbGenericRSTransform.txx
@@ -20,6 +20,7 @@
 
 #include "otbGenericRSTransform.h"
 #include "otbMacro.h"
+#include "otbMetaDataKey.h"
 // #include "projection/ossimMapProjectionFactory.h"
 // #include "projection/ossimMapProjection.h"
 #include "itkMetaDataObject.h"