1 files changed, 7 insertions, 0 deletions
diff --git a/src/iso19111/datum.cpp b/src/iso19111/datum.cpp
index 83f615e9..fbd4fd2d 100644
--- a/src/iso19111/datum.cpp
+++ b/src/iso19111/datum.cpp
@@ -1300,6 +1300,13 @@ void GeodeticReferenceFrame::_exportToWKT(
     }
     // the PRIMEM is exported as a child of the CRS
     formatter->endNode();
+
+    if (formatter->isAtTopLevel()) {
+        const auto &l_primeMeridian(primeMeridian());
+        if (l_primeMeridian->nameStr() != "Greenwich") {
+            l_primeMeridian->_exportToWKT(formatter);
+        }
+    }
 }
 //! @endcond