diff --git a/rtengine/rawimagesource.h b/rtengine/rawimagesource.h
index 51add0e97..e0cf5e90c 100644
--- a/rtengine/rawimagesource.h
+++ b/rtengine/rawimagesource.h
@@ -290,7 +290,7 @@ protected:
     void dcb_refinement(float (*image)[3], uint8_t *map, int x0, int y0);
     void dcb_color_full(float (*image)[3], int x0, int y0, float (*chroma)[2]);
     void cielab (const float (*rgb)[3], float* l, float* a, float *b, const int width, const int height, const int labWidth, const float xyz_cam[3][3]);
-    void xtransborder_interpolate (int border);
+    void xtransborder_interpolate (int border, array2D<float> &red, array2D<float> &green, array2D<float> &blue);
     void xtrans_interpolate (const int passes, const bool useCieLab);
     void fast_xtrans_interpolate (const array2D<float> &rawData, array2D<float> &red, array2D<float> &green, array2D<float> &blue);
     void pixelshift(int winx, int winy, int winw, int winh, const RAWParams &rawParams, unsigned int frame, const std::string &make, const std::string &model, float rawWpCorrection);
diff --git a/rtengine/xtrans_demosaic.cc b/rtengine/xtrans_demosaic.cc
index edf5e250b..ed253749b 100644
--- a/rtengine/xtrans_demosaic.cc
+++ b/rtengine/xtrans_demosaic.cc
@@ -114,7 +114,7 @@ void RawImageSource::cielab (const float (*rgb)[3], float* l, float* a, float *b
 #define fcol(row,col) xtrans[(row)%6][(col)%6]
 #define isgreen(row,col) (xtrans[(row)%3][(col)%3]&1)
 
-void RawImageSource::xtransborder_interpolate (int border)
+void RawImageSource::xtransborder_interpolate (int border, array2D<float> &red, array2D<float> &green, array2D<float> &blue)
 {
     const int height = H, width = W;
 
@@ -201,7 +201,7 @@ void RawImageSource::xtrans_interpolate (const int passes, const bool useCieLab)
 //        printf("%d-pass X-Trans interpolation using %s conversion...\n", passes, useCieLab ? "lab" : "yuv");
 //    }
 
-    xtransborder_interpolate(6);
+    xtransborder_interpolate(6, red, green, blue);
 
     float xyz_cam[3][3];
     {
@@ -974,7 +974,7 @@ void RawImageSource::fast_xtrans_interpolate (const array2D<float> &rawData, arr
 
     const int height = H, width = W;
 
-    xtransborder_interpolate (1);
+    xtransborder_interpolate (1, red, green, blue);
     int xtrans[6][6];
     ri->getXtransMatrix(xtrans);