diff --git a/FL/Fl_Panzoomer.H b/FL/Fl_Panzoomer.H
index f1820bd..c068781 100644
--- a/FL/Fl_Panzoomer.H
+++ b/FL/Fl_Panzoomer.H
@@ -69,7 +69,7 @@ public:
             _xpos = pos;
             _xsize = size;
 
-            redraw();
+            damage( FL_DAMAGE_USER1 );
 
             return pos;
         }
@@ -84,8 +84,7 @@ public:
             _ypos = pos;
             _ysize = size;
 
-
-            redraw();
+            damage( FL_DAMAGE_USER1 );
 
             return pos;
         }
diff --git a/src/Fl_Panzoomer.cxx b/src/Fl_Panzoomer.cxx
index 808826e..8d84a0a 100644
--- a/src/Fl_Panzoomer.cxx
+++ b/src/Fl_Panzoomer.cxx
@@ -94,7 +94,8 @@ Fl_Panzoomer::draw ( void )
 void
 Fl_Panzoomer::draw ( int X, int Y, int W, int H )
 {
-    fl_draw_box( box(), X,Y,W,H,color());
+    if ( ! (damage() & FL_DAMAGE_USER1 ))
+        fl_draw_box( box(), X,Y,W,H,color());
 
     X += Fl::box_dx( box() );
     Y += Fl::box_dy( box() );