diff --git a/ChangeLog b/ChangeLog
index 7760ef410..a6e1e5034 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2005-11-28  Stephane Voltz <stefdev@modulonet.fr>
+
+	* backend/umax_pp_low.c: ifdef'ed forgottent debug statements
+
 2005-11-28  Stephane Voltz <stefdev@modulonet.fr>
 
 	* backend/umax_pp_low.c: fixed 'blue tint' on scanning area border
diff --git a/backend/umax_pp_low.c b/backend/umax_pp_low.c
index 3cb1c8949..b1a4abef4 100644
--- a/backend/umax_pp_low.c
+++ b/backend/umax_pp_low.c
@@ -9921,8 +9921,8 @@ evalGain (int sum, int count)
   int gn;
   float pct;
   float avg;
-  float area=15;
-  float coeff=2;
+  float area=50;
+  float coeff=2.5;
   float cnst=0.9;
 
 
@@ -9936,12 +9936,14 @@ evalGain (int sum, int count)
   gn = (int) (pct / 0.57);
  
   /* give gain for dark areas a boost */
+#ifdef UMAX_PP_DANGEROUS_EXPERIMENT
   if(getenv("AREA")!=NULL)
         cnst=atol(getenv("AREA"));
   if(getenv("COEFF")!=NULL)
         cnst=atol(getenv("COEFF"));
   if(getenv("CNST")!=NULL)
         cnst=atol(getenv("CNST"));
+#endif
 
   pct = gn;
   avg = exp((-pct)/area)*coeff+cnst;