diff --git a/rtengine/procparams.cc b/rtengine/procparams.cc
index e2c16a35d..159d9f503 100644
--- a/rtengine/procparams.cc
+++ b/rtengine/procparams.cc
@@ -3661,7 +3661,13 @@ int ProcParams::load(const Glib::ustring& fname, ParamsEdited* pedited)
             assignFromKeyfile(keyFile, "RAW", "FlatFieldBlurRadius", pedited, raw.ff_BlurRadius, pedited->raw.ff_BlurRadius);
             assignFromKeyfile(keyFile, "RAW", "FlatFieldBlurType", pedited, raw.ff_BlurType, pedited->raw.ff_BlurType);
             assignFromKeyfile(keyFile, "RAW", "FlatFieldAutoClipControl", pedited, raw.ff_AutoClipControl, pedited->raw.ff_AutoClipControl);
-            assignFromKeyfile(keyFile, "RAW", "FlatFieldClipControl", pedited, raw.ff_clipControl, pedited->raw.ff_clipControl);
+            if (ppVersion < 328) {
+                // With ppversion < 328 this value was stored as a boolean, which is nonsense.
+                // To avoid annoying warnings we skip reading and assume 0.
+                raw.ff_clipControl = 0;
+            } else {
+                assignFromKeyfile(keyFile, "RAW", "FlatFieldClipControl", pedited, raw.ff_clipControl, pedited->raw.ff_clipControl);
+            }
             assignFromKeyfile(keyFile, "RAW", "CA", pedited, raw.ca_autocorrect, pedited->raw.ca_autocorrect);
             assignFromKeyfile(keyFile, "RAW", "CARed", pedited, raw.cared, pedited->raw.cared);
             assignFromKeyfile(keyFile, "RAW", "CABlue", pedited, raw.cablue, pedited->raw.cablue);
diff --git a/rtgui/ppversion.h b/rtgui/ppversion.h
index d2e9be090..d799be406 100644
--- a/rtgui/ppversion.h
+++ b/rtgui/ppversion.h
@@ -1,14 +1,15 @@
-#ifndef _PPVERSION_
-#define _PPVERSION_
+#pragma once
 
 // This number has to be incremented whenever the PP3 file format is modified or the behaviour of a tool changes
-#define PPVERSION 327
+#define PPVERSION 328
 #define PPVERSION_AEXP 301 //value of PPVERSION when auto exposure algorithm was modified
 
 /*
   Log of version changes
+   328  2017-11-22
+        Fix wrong type of ff_clipControl
    327  2017-09-15
-        [Profiles Lens Correction] Added Lensfun
+        [Profiled Lens Correction] Added Lensfun
    326  2015-07-26
         [Exposure] Added 'Perceptual' tone curve mode
    325  2015-07-23
@@ -45,5 +46,3 @@
         added  [Directional Pyramid Denoising] Method, Redchro, Bluechro
         added [RGB Curves] LumaMode
  */
-
-#endif