diff --git a/rtengine/green_equil_RT.cc b/rtengine/green_equil_RT.cc
index 9706b06c1..77365dc21 100644
--- a/rtengine/green_equil_RT.cc
+++ b/rtengine/green_equil_RT.cc
@@ -48,10 +48,10 @@ void RawImageSource::green_equilibrate_global(array2D<float> &rawData)
         double avgg = 0.;
         int ng = 0;
         for (int j = border + ((FC(i, border) & 1) ^ 1); j < W - border; j += 2) {
-            if(rawData[i][j] > 0.f) {
+//            if(rawData[i][j] > 0.f) {
                 avgg += rawData[i][j];
                 ng++;
-            }
+//            }
         }
 
         if (i & 1) {
diff --git a/rtengine/rawimagesource.cc b/rtengine/rawimagesource.cc
index 25c732947..5d654317c 100644
--- a/rtengine/rawimagesource.cc
+++ b/rtengine/rawimagesource.cc
@@ -1952,7 +1952,7 @@ void RawImageSource::preprocess  (const RAWParams &raw, const LensProfParams &le
             for(int i = 0; i < 4; ++i) {
                 green_equilibrate_global(*rawDataFrames[i]);
             }
-        } else {
+        } else if(idata->getModel() != "E-M1MarkII") {
             green_equilibrate_global(rawData);
         }
     }