diff --git a/src/nt/nttable.cpp b/src/nt/nttable.cpp
index 61368f0..c510349 100644
--- a/src/nt/nttable.cpp
+++ b/src/nt/nttable.cpp
@@ -20,7 +20,7 @@ static NTFieldPtr ntField = NTField::get();
 
 namespace detail {
 
-NTTableBuilder::shared_pointer NTTableBuilder::add(
+NTTableBuilder::shared_pointer NTTableBuilder::addColumn(
         std::string const & name, epics::pvData::ScalarType scalarType
         )
 {
diff --git a/src/nt/nttable.h b/src/nt/nttable.h
index 857ad94..32a2e79 100644
--- a/src/nt/nttable.h
+++ b/src/nt/nttable.h
@@ -53,7 +53,7 @@ namespace detail {
          * @param elementType column type, a scalar array.
          * @return this instance of <b>NTTableBuilder</b>.
          */
-        shared_pointer add(std::string const & name, epics::pvData::ScalarType elememtType);
+        shared_pointer addColumn(std::string const & name, epics::pvData::ScalarType elememtType);
 
         /**
          * Add descriptor field to the NTTable.
diff --git a/test/nt/nttableTest.cpp b/test/nt/nttableTest.cpp
index 71372ad..cef8efb 100644
--- a/test/nt/nttableTest.cpp
+++ b/test/nt/nttableTest.cpp
@@ -22,9 +22,9 @@ void test_builder()
     testOk(builder.get() != 0, "Got builder");
 
     StructureConstPtr structure = builder->
-            add("column0", pvDouble)->
-            add("column1", pvString)->
-            add("column2", pvInt)->
+            addColumn("column0", pvDouble)->
+            addColumn("column1", pvString)->
+            addColumn("column2", pvInt)->
             addDescriptor()->
             addAlarm()->
             addTimeStamp()->
@@ -64,8 +64,8 @@ void test_builder()
     try
     {
         structure = builder->
-                add("column0", pvDouble)->
-                add("column0", pvString)->
+                addColumn("column0", pvDouble)->
+                addColumn("column0", pvString)->
                 createStructure();
         testFail("duplicate column name");
     } catch (std::runtime_error &) {
@@ -81,9 +81,9 @@ void test_labels()
     testOk(builder.get() != 0, "Got builder");
 
     PVStructurePtr pvStructure = builder->
-            add("column0", pvDouble)->
-            add("column1", pvString)->
-            add("column2", pvInt)->
+            addColumn("column0", pvDouble)->
+            addColumn("column1", pvString)->
+            addColumn("column2", pvInt)->
             createPVStructure();
     testOk1(pvStructure.get() != 0);
     if (!pvStructure)
@@ -110,9 +110,9 @@ void test_nttable()
     testOk(builder.get() != 0, "Got builder");
 
     NTTablePtr ntTable = builder->
-            add("column0", pvDouble)->
-            add("column1", pvString)->
-            add("column2", pvInt)->
+            addColumn("column0", pvDouble)->
+            addColumn("column1", pvString)->
+            addColumn("column2", pvInt)->
             addDescriptor()->
             addAlarm()->
             addTimeStamp()->
@@ -220,9 +220,9 @@ void test_wrap()
     testOk(builder.get() != 0, "Got builder");
 
     PVStructurePtr pvStructure = builder->
-            add("column0", pvDouble)->
-            add("column1", pvString)->
-            add("column2", pvInt)->
+            addColumn("column0", pvDouble)->
+            addColumn("column1", pvString)->
+            addColumn("column2", pvInt)->
             createPVStructure();
     testOk1(pvStructure.get() != 0);
     if (!pvStructure)