diff --git a/rtengine/improccoordinator.cc b/rtengine/improccoordinator.cc
index 72e6832c0..29eeb07e8 100644
--- a/rtengine/improccoordinator.cc
+++ b/rtengine/improccoordinator.cc
@@ -234,7 +234,7 @@ void ImProcCoordinator::updatePreviewImage (int todo, Crop* cropCall)
             if(params.raw.bayersensor.method != RAWParams::BayerSensor::getMethodString(RAWParams::BayerSensor::Method::PIXELSHIFT)) {
                 imgsrc->setBorder(params.raw.bayersensor.border);
             } else {
-                imgsrc->setBorder(std::max(params.raw.bayersensor.border, 1));
+                imgsrc->setBorder(std::max(params.raw.bayersensor.border, 2));
             }
         }
         bool autoContrast = false;
diff --git a/rtengine/simpleprocess.cc b/rtengine/simpleprocess.cc
index 718c9c88c..14f215f07 100644
--- a/rtengine/simpleprocess.cc
+++ b/rtengine/simpleprocess.cc
@@ -163,7 +163,7 @@ private:
             if(params.raw.bayersensor.method!= RAWParams::BayerSensor::getMethodString(RAWParams::BayerSensor::Method::PIXELSHIFT)) {
                 imgsrc->setBorder(params.raw.bayersensor.border);
             } else {
-                imgsrc->setBorder(std::max(params.raw.bayersensor.border, 1));
+                imgsrc->setBorder(std::max(params.raw.bayersensor.border, 2));
             }
         }
         imgsrc->getFullSize (fw, fh, tr);