diff --git a/include/osg/PolygonMode b/include/osg/PolygonMode
index 3c9a4cd35..9534f4271 100644
--- a/include/osg/PolygonMode
+++ b/include/osg/PolygonMode
@@ -39,7 +39,7 @@ class OSG_EXPORT PolygonMode : public StateAttribute
 
         PolygonMode();
 
-        PolygonMode(Face face,Mode mode) { setMode(face,mode); }
+        PolygonMode(Face face,Mode mode);
 
         /** Copy constructor using CopyOp to manage deep vs shallow copy.*/
         PolygonMode(const PolygonMode& pm,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
diff --git a/src/osg/PolygonMode.cpp b/src/osg/PolygonMode.cpp
index a6bd696f9..5dfb535e8 100644
--- a/src/osg/PolygonMode.cpp
+++ b/src/osg/PolygonMode.cpp
@@ -16,10 +16,17 @@
 
 using namespace osg;
 
-PolygonMode::PolygonMode()
+PolygonMode::PolygonMode():
+    _modeFront(FILL),
+    _modeBack(FILL)
 {
-    _modeFront = FILL;
-    _modeBack = FILL;
+}
+
+PolygonMode::PolygonMode(Face face,Mode mode):
+    _modeFront(FILL),
+    _modeBack(FILL)
+{
+    setMode(face,mode);
 }