diff --git a/src/blackmisc/avatcstation.cpp b/src/blackmisc/avatcstation.cpp
index e016fb536..eb275d59a 100644
--- a/src/blackmisc/avatcstation.cpp
+++ b/src/blackmisc/avatcstation.cpp
@@ -258,7 +258,7 @@ namespace BlackMisc
          */
         const CLength &CAtcStation::calculcateDistanceToPlane(const CCoordinateGeodetic &position)
         {
-            this->m_distanceToPlane = greatCircleDistance(this->m_position, position);
+            this->m_distanceToPlane = Geo::greatCircleDistance(this->m_position, position);
             return this->m_distanceToPlane;
         }
 
diff --git a/src/blackmisc/coordinategeodetic.cpp b/src/blackmisc/coordinategeodetic.cpp
index 529821690..bb353e9a9 100644
--- a/src/blackmisc/coordinategeodetic.cpp
+++ b/src/blackmisc/coordinategeodetic.cpp
@@ -163,5 +163,13 @@ namespace BlackMisc
             return CLength(qAbs(dist), CLengthUnit::NM());
         }
 
+        /*
+         * Great circle distance
+         */
+        CLength ICoordinateGeodetic::greatCircleDistance(const ICoordinateGeodetic &otherCoordinate)
+        {
+            return Geo::greatCircleDistance((*this), otherCoordinate);
+        }
+
     } // namespace
 } // namespace
diff --git a/src/blackmisc/coordinategeodetic.h b/src/blackmisc/coordinategeodetic.h
index 6b00bcdd5..c41184b1d 100644
--- a/src/blackmisc/coordinategeodetic.h
+++ b/src/blackmisc/coordinategeodetic.h
@@ -42,6 +42,8 @@ namespace BlackMisc
                 return this->longitude().toQString(true);
             }
 
+            //! Great circle distance
+            BlackMisc::PhysicalQuantities::CLength greatCircleDistance(const ICoordinateGeodetic &otherCoordinate);
         };
 
         //! Great circle distance between points