diff --git a/opm/input/eclipse/EclipseState/Tables/FlatTable.hpp b/opm/input/eclipse/EclipseState/Tables/FlatTable.hpp
index 804982521..95fe29fad 100644
--- a/opm/input/eclipse/EclipseState/Tables/FlatTable.hpp
+++ b/opm/input/eclipse/EclipseState/Tables/FlatTable.hpp
@@ -96,12 +96,6 @@ struct GravityTable : public FlatTableWithCopy<GRAVITYRecord>
     {
         return GravityTable({{1.0, 2.0, 3.0}});
     }
-
-    template <class Serializer>
-    void serializeOp(Serializer& serializer)
-    {
-        FlatTableWithCopy::serializeOp(serializer);
-    }
 };
 
 struct DENSITYRecord {
@@ -137,12 +131,6 @@ struct DensityTable : public FlatTableWithCopy<DENSITYRecord>
     {
         return DensityTable({{1.0, 2.0, 3.0}});
     }
-
-    template <class Serializer>
-    void serializeOp(Serializer& serializer)
-    {
-        FlatTableWithCopy::serializeOp(serializer);
-    }
 };
 
 struct DiffCoeffRecord {
@@ -286,12 +274,6 @@ struct PvtwTable : public FlatTableWithCopy<PVTWRecord>
     {
         return PvtwTable({{1.0, 2.0, 3.0, 4.0, 5.0}});
     }
-
-    template <class Serializer>
-    void serializeOp(Serializer& serializer)
-    {
-        FlatTableWithCopy::serializeOp(serializer);
-    }
 };
 
 struct ROCKRecord {
@@ -323,12 +305,6 @@ struct RockTable : public FlatTableWithCopy<ROCKRecord>
     {
         return RockTable({{1.0, 2.0}});
     }
-
-    template <class Serializer>
-    void serializeOp(Serializer& serializer)
-    {
-        FlatTableWithCopy::serializeOp(serializer);
-    }
 };
 
 struct PVCDORecord {