diff --git a/src/FbTk/FbWindow.cc b/src/FbTk/FbWindow.cc
index fb0ad1dd..956415da 100644
--- a/src/FbTk/FbWindow.cc
+++ b/src/FbTk/FbWindow.cc
@@ -79,6 +79,10 @@ FbWindow::FbWindow(int screen_num,
     FbDrawable(),
     m_parent(0),
     m_screen_num(screen_num),
+    m_x(0), m_y(0), m_width(0), m_height(0),
+    m_border_width(0),
+    m_border_color(0),
+    m_depth(0),
     m_destroy(true),
     m_lastbg_color_set(false),
     m_lastbg_color(0),