diff --git a/rtgui/perspective.cc b/rtgui/perspective.cc
index 410bc8360..eeab4cd6d 100644
--- a/rtgui/perspective.cc
+++ b/rtgui/perspective.cc
@@ -251,7 +251,7 @@ PerspCorrection::PerspCorrection () : FoldableToolPanel(this, TOOL_NAME, M("TP_P
     projection_rotate = Gtk::manage (new Adjuster (M("TP_PERSPECTIVE_PROJECTION_ROTATE"), -45, 45, 0.01, 0, ipers_rotate_left, ipers_rotate_right));
     projection_rotate->setAdjusterListener (this);
 
-    camera_scale= Gtk::manage (new Adjuster (M("TP_PERSPECTIVE_CAMERA_SCALE"), 0.1, 10, 0.01, 0));
+    camera_scale= Gtk::manage (new Adjuster (M("TP_PERSPECTIVE_CAMERA_SCALE"), 0.1, 10, 0.01, 1));
     camera_scale->setAdjusterListener (this);
 
     Gtk::Frame* recovery_frame = Gtk::manage (new Gtk::Frame