diff --git a/src/blackmisc/geoearthangle.cpp b/src/blackmisc/geoearthangle.cpp
index 456549858..7ddcf9553 100644
--- a/src/blackmisc/geoearthangle.cpp
+++ b/src/blackmisc/geoearthangle.cpp
@@ -79,9 +79,9 @@ namespace BlackMisc
             Q_ASSERT(qv.canConvert<LATorLON>() || qv.canConvert<CAngle>());
             Q_ASSERT(qv.isValid() && !qv.isNull());
             if (qv.canConvert<LATorLON>())
-                return this->toAngle().compare(qv.value<LATorLON>().toAngle());
+                return this->compare(qv.value<LATorLON>());
             else
-                return this->toAngle().compare(qv.value<CAngle>());
+                return this->compare(qv.value<CAngle>());
         }
 
         // see here for the reason of thess forward instantiations
diff --git a/src/blackmisc/geoearthangle.h b/src/blackmisc/geoearthangle.h
index a2e5284b0..891263f97 100644
--- a/src/blackmisc/geoearthangle.h
+++ b/src/blackmisc/geoearthangle.h
@@ -175,20 +175,20 @@ namespace BlackMisc
                 return l;
             }
 
-            /*!
-             * \brief To angle
-             * \return
-             */
-            BlackMisc::PhysicalQuantities::CAngle toAngle() const
-            {
-                return BlackMisc::PhysicalQuantities::CAngle(static_cast<BlackMisc::PhysicalQuantities::CAngle>(*this));
-            }
-
             /*!
              * Compare
              */
             int compare(const QVariant &qv) const;
 
+            /*!
+             * \todo this is a hack, to avoid hiding inherited names in CPhysicalQuantity
+             * (see Effective C++ item 33) CPhysicalQuantity::compare is the real culprit
+             */
+            int compare(const CEarthAngle &other) const
+            {
+                return static_cast<const CPhysicalQuantity<BlackMisc::PhysicalQuantities::CAngleUnit, BlackMisc::PhysicalQuantities::CAngle> *>(this)->compare(other);
+            }
+
             /*!
              * Register metadata
              */