diff --git a/pvDataApp/factory/PVDataCreateFactory.cpp b/pvDataApp/factory/PVDataCreateFactory.cpp
index 7c20509..a9efae1 100644
--- a/pvDataApp/factory/PVDataCreateFactory.cpp
+++ b/pvDataApp/factory/PVDataCreateFactory.cpp
@@ -28,7 +28,7 @@ using std::min;
 namespace epics { namespace pvData {
 
 
-//template<> const ScalarType PVBoolean::typeCode = pvBoolean;
+template<> const ScalarType PVBoolean::typeCode = pvBoolean;
 template<> const ScalarType PVByte::typeCode = pvByte;
 template<> const ScalarType PVShort::typeCode = pvShort;
 template<> const ScalarType PVInt::typeCode = pvInt;
@@ -41,7 +41,7 @@ template<> const ScalarType PVFloat::typeCode = pvFloat;
 template<> const ScalarType PVDouble::typeCode = pvDouble;
 template<> const ScalarType PVScalarValue<String>::typeCode = pvString;
 
-//template<> const ScalarType PVBooleanArray::typeCode = pvBoolean;
+template<> const ScalarType PVBooleanArray::typeCode = pvBoolean;
 template<> const ScalarType PVByteArray::typeCode = pvByte;
 template<> const ScalarType PVShortArray::typeCode = pvShort;
 template<> const ScalarType PVIntArray::typeCode = pvInt;
diff --git a/pvDataApp/pv/pvData.h b/pvDataApp/pv/pvData.h
index e8aeef5..fd7cea4 100644
--- a/pvDataApp/pv/pvData.h
+++ b/pvDataApp/pv/pvData.h
@@ -530,7 +530,7 @@ private:
 /**
  * typedefs for the various possible scalar types.
  */
-typedef PVScalarValue<uint8> PVBoolean;
+typedef PVScalarValue<boolean> PVBoolean;
 typedef PVScalarValue<int8> PVByte;
 typedef PVScalarValue<int16> PVShort;
 typedef PVScalarValue<int32> PVInt;
@@ -1373,8 +1373,8 @@ private:
 /**
  * Definitions for the various scalarArray types.
  */
-typedef PVArrayData<uint8> BooleanArrayData;
-typedef PVValueArray<uint8> PVBooleanArray;
+typedef PVArrayData<boolean> BooleanArrayData;
+typedef PVValueArray<boolean> PVBooleanArray;
 typedef std::tr1::shared_ptr<PVBooleanArray> PVBooleanArrayPtr;
 
 typedef PVArrayData<int8> ByteArrayData;
diff --git a/pvDataApp/pv/pvType.h b/pvDataApp/pv/pvType.h
index b9ffce7..0dc2b81 100644
--- a/pvDataApp/pv/pvType.h
+++ b/pvDataApp/pv/pvType.h
@@ -33,6 +33,14 @@ typedef unsigned int uintptr_t;
 
 namespace epics { namespace pvData { 
 
+namespace detail {
+    // Pick either type If or type Else to not be Cond
+    template<typename Cond, typename If, typename Else>
+    struct pick_type { typedef If type; };
+    template<typename Cond, typename Else>
+    struct pick_type<Cond,Cond,Else> { typedef Else type; };
+}
+
 /**
  * This is a set of typdefs used by pvData.
  */
@@ -40,7 +48,9 @@ namespace epics { namespace pvData {
 /**
  * boolean, i.e. can only have the values {@code false} or {@code true}
  */
-typedef uint8_t     boolean;
+typedef detail::pick_type<int8_t, signed char,
+                          detail::pick_type<uint8_t, char, unsigned char>::type
+                          >::type boolean;
 /**
  * A 8 bit signed integer
  */