diff --git a/unix/x0vncserver/Geometry.cxx b/unix/x0vncserver/Geometry.cxx
index 48c1842..d911471 100644
--- a/unix/x0vncserver/Geometry.cxx
+++ b/unix/x0vncserver/Geometry.cxx
@@ -35,10 +35,16 @@
   "");
 
 Geometry::Geometry(int fullWidth, int fullHeight)
-  : m_fullWidth(fullWidth),
-    m_fullHeight(fullHeight),
-    m_rect(0, 0, fullWidth, fullHeight)
 {
+  recalc(fullWidth, fullHeight);
+}
+
+void Geometry::recalc(int fullWidth, int fullHeight)
+{
+  m_fullWidth = fullWidth;
+  m_fullHeight = fullHeight;
+  m_rect.setXYWH(0, 0, fullWidth, fullHeight);
+
   // Parse geometry specification and save the result in m_rect.
   const char *param = m_geometryParam.getData();
   bool geometrySpecified = (strlen(param) > 0);