diff --git a/rtengine/procparams.cc b/rtengine/procparams.cc
index bc2aea4d8..1337ccabd 100644
--- a/rtengine/procparams.cc
+++ b/rtengine/procparams.cc
@@ -1028,29 +1028,32 @@ if (keyFile.has_group ("Channel Mixer")) {
 }
 
     // load luma curve
-if (keyFile.has_group ("Luminance Curve")) {    
+if (keyFile.has_group ("Luminance Curve")) {
     if (keyFile.has_key ("Luminance Curve", "Brightness"))     { labCurve.brightness   = keyFile.get_integer ("Luminance Curve", "Brightness"); if (pedited) pedited->labCurve.brightness = true; }
     if (keyFile.has_key ("Luminance Curve", "Contrast"))       { labCurve.contrast     = keyFile.get_integer ("Luminance Curve", "Contrast"); if (pedited) pedited->labCurve.contrast = true; }
-	if (keyFile.has_key ("Luminance Curve", "Chromaticity"))   { labCurve.chromaticity = keyFile.get_integer ("Luminance Curve", "Chromaticity"); if (pedited) pedited->labCurve.chromaticity = true; }
 
-	if (PPVERSION < 303) {
-	// transform AvoidColorClipping into AvoidColorShift
-	if (keyFile.has_key ("Luminance Curve", "AvoidColorClipping"))        { labCurve.avoidcolorshift = keyFile.get_boolean ("Luminance Curve", "AvoidColorClipping"); if (pedited) pedited->labCurve.avoidcolorshift = true; }
-	}
-	else {
-	if (keyFile.has_key ("Luminance Curve", "AvoidColorShift"))           { labCurve.avoidcolorshift = keyFile.get_boolean ("Luminance Curve", "AvoidColorShift"); if (pedited) pedited->labCurve.avoidcolorshift = true; }
-	if (keyFile.has_key ("Luminance Curve", "RedAndSkinTonesProtection")) { labCurve.rstprotection   = keyFile.get_double  ("Luminance Curve", "RedAndSkinTonesProtection"); if (pedited) pedited->labCurve.rstprotection = true; }
-	}
+    if (ppVersion < 303) {
+        // transform Saturation into Chromaticity
+        // if Saturation == 0, should we set BWToning on?
+        if (keyFile.has_key ("Luminance Curve", "Saturation"))                { labCurve.chromaticity    = keyFile.get_integer ("Luminance Curve", "Saturation"); if (pedited) pedited->labCurve.chromaticity = true; }
+        // transform AvoidColorClipping into AvoidColorShift
+        if (keyFile.has_key ("Luminance Curve", "AvoidColorClipping"))        { labCurve.avoidcolorshift = keyFile.get_boolean ("Luminance Curve", "AvoidColorClipping"); if (pedited) pedited->labCurve.avoidcolorshift = true; }
+    }
+    else {
+        if (keyFile.has_key ("Luminance Curve", "Chromaticity"))              { labCurve.chromaticity    = keyFile.get_integer ("Luminance Curve", "Chromaticity"); if (pedited) pedited->labCurve.chromaticity = true; }
+        if (keyFile.has_key ("Luminance Curve", "AvoidColorShift"))           { labCurve.avoidcolorshift = keyFile.get_boolean ("Luminance Curve", "AvoidColorShift"); if (pedited) pedited->labCurve.avoidcolorshift = true; }
+        if (keyFile.has_key ("Luminance Curve", "RedAndSkinTonesProtection")) { labCurve.rstprotection   = keyFile.get_double  ("Luminance Curve", "RedAndSkinTonesProtection"); if (pedited) pedited->labCurve.rstprotection = true; }
+    }
     if (keyFile.has_key ("Luminance Curve", "LCredsk"))         { labCurve.lcredsk            = keyFile.get_boolean     ("Luminance Curve", "LCredsk"); if (pedited) pedited->labCurve.lcredsk = true; }
     if (keyFile.has_key ("Luminance Curve", "BWtoning"))        { labCurve.bwtoning           = keyFile.get_boolean     ("Luminance Curve", "BWtoning"); if (pedited) pedited->labCurve.bwtoning = true; }
-	if (keyFile.has_key ("Luminance Curve", "LCurve"))          { labCurve.lcurve             = keyFile.get_double_list ("Luminance Curve", "LCurve"); if (pedited) pedited->labCurve.lcurve = true; }
-	if (keyFile.has_key ("Luminance Curve", "aCurve"))          { labCurve.acurve             = keyFile.get_double_list ("Luminance Curve", "aCurve"); if (pedited) pedited->labCurve.acurve = true; }
-	if (keyFile.has_key ("Luminance Curve", "bCurve"))          { labCurve.bcurve             = keyFile.get_double_list ("Luminance Curve", "bCurve"); if (pedited) pedited->labCurve.bcurve = true; }
-	if (keyFile.has_key ("Luminance Curve", "ccCurve"))         { labCurve.cccurve            = keyFile.get_double_list ("Luminance Curve", "ccCurve"); if (pedited) pedited->labCurve.cccurve = true; }
-	if (keyFile.has_key ("Luminance Curve", "chCurve"))         { labCurve.chcurve            = keyFile.get_double_list ("Luminance Curve", "chCurve"); if (pedited) pedited->labCurve.chcurve = true; }
-    if (keyFile.has_key ("Luminance Curve", "LcCurve"))         { labCurve.lccurve           = keyFile.get_double_list ("Luminance Curve", "LcCurve"); if (pedited) pedited->labCurve.lccurve = true; }
+    if (keyFile.has_key ("Luminance Curve", "LCurve"))          { labCurve.lcurve             = keyFile.get_double_list ("Luminance Curve", "LCurve"); if (pedited) pedited->labCurve.lcurve = true; }
+    if (keyFile.has_key ("Luminance Curve", "aCurve"))          { labCurve.acurve             = keyFile.get_double_list ("Luminance Curve", "aCurve"); if (pedited) pedited->labCurve.acurve = true; }
+    if (keyFile.has_key ("Luminance Curve", "bCurve"))          { labCurve.bcurve             = keyFile.get_double_list ("Luminance Curve", "bCurve"); if (pedited) pedited->labCurve.bcurve = true; }
+    if (keyFile.has_key ("Luminance Curve", "ccCurve"))         { labCurve.cccurve            = keyFile.get_double_list ("Luminance Curve", "ccCurve"); if (pedited) pedited->labCurve.cccurve = true; }
+    if (keyFile.has_key ("Luminance Curve", "chCurve"))         { labCurve.chcurve            = keyFile.get_double_list ("Luminance Curve", "chCurve"); if (pedited) pedited->labCurve.chcurve = true; }
+    if (keyFile.has_key ("Luminance Curve", "LcCurve"))         { labCurve.lccurve            = keyFile.get_double_list ("Luminance Curve", "LcCurve"); if (pedited) pedited->labCurve.lccurve = true; }
 
-	}
+    }
 
     // load sharpening
 if (keyFile.has_group ("Sharpening")) {