diff --git a/rtengine/dcraw.cc b/rtengine/dcraw.cc
index ed7b43c19..bae38b193 100644
--- a/rtengine/dcraw.cc
+++ b/rtengine/dcraw.cc
@@ -9316,13 +9316,15 @@ konica_400z:
       width -= 6;
   } else if (!strcmp(make,"Sony") && raw_width == 7392) {
     width -= 30;
-  } else if (!strcmp(make,"Sony") && raw_width == 8000) {
-    width -= 32;
-    if (!strncmp(model,"DSC",3)) {
-      tiff_bps = 14;
-      load_raw = &CLASS unpacked_load_raw;
-      black = 512;
-    }
+// this was introduced with update to dcraw 9.27
+// but led to broken decode for compressed files from Sony DSC-RX1RM2
+//  } else if (!strcmp(make,"Sony") && raw_width == 8000) {
+//    width -= 32;
+//    if (!strncmp(model,"DSC",3)) {
+//      tiff_bps = 14;
+//      load_raw = &CLASS unpacked_load_raw;
+//      black = 512;
+//    }
   } else if (!strcmp(model,"DSLR-A100")) {
     if (width == 3880) {
       height--;
diff --git a/rtengine/dcraw.patch b/rtengine/dcraw.patch
index a3c0a354f..baa0af282 100644
--- a/rtengine/dcraw.patch
+++ b/rtengine/dcraw.patch
@@ -1,5 +1,5 @@
---- dcraw.c	2016-06-17 13:44:42 +0000
-+++ dcraw.cc	2016-06-17 14:49:21 +0000
+--- dcraw.c	2016-06-24 11:50:34 +0000
++++ dcraw.cc	2016-06-24 12:40:36 +0000
 @@ -1,3 +1,16 @@
 +/*RT*/#include <glib.h>
 +/*RT*/#include <glib/gstdio.h>
@@ -1013,11 +1013,11 @@
 -  int dir[5] = { 1, width, -1, -width, 1 };
 -  int row, col, diff[2], guess[2], c, d, i;
 -  ushort (*pix)[4];
-+/* RT: delete interpolation functions */
- 
+-
 -  border_interpolate(3);
 -  if (verbose) fprintf (stderr,_("PPG interpolation...\n"));
--
++/* RT: delete interpolation functions */
+ 
 -/*  Fill in the green layer with gradients and pattern recognition: */
 -  for (row=3; row < height-3; row++)
 -    for (col=3+(FC(row,3) & 1), c=FC(row,col); col < width-3; col+=2) {
@@ -1080,7 +1080,7 @@
 -   char (*homo)[TS][TS], *buffer;
 -
 -  if (verbose) fprintf (stderr,_("AHD interpolation...\n"));
- 
+-
 -  cielab (0,0);
 -  border_interpolate(5);
 -  buffer = (char *) malloc (26*TS*TS);
@@ -1091,7 +1091,7 @@
 -
 -  for (top=2; top < height-5; top += TS-6)
 -    for (left=2; left < width-5; left += TS-6) {
--
+ 
 -/*  Interpolate green horizontally and vertically:		*/
 -      for (row=top; row < top+TS && row < height-2; row++) {
 -	col = left + (FC(row,left) & 1);
@@ -1717,7 +1717,30 @@
    } else if (!strcmp(model,"C770UZ")) {
      height = 1718;
      width  = 2304;
-@@ -9357,6 +9472,18 @@
+@@ -9201,13 +9316,15 @@
+       width -= 6;
+   } else if (!strcmp(make,"Sony") && raw_width == 7392) {
+     width -= 30;
+-  } else if (!strcmp(make,"Sony") && raw_width == 8000) {
+-    width -= 32;
+-    if (!strncmp(model,"DSC",3)) {
+-      tiff_bps = 14;
+-      load_raw = &CLASS unpacked_load_raw;
+-      black = 512;
+-    }
++// this was introduced with update to dcraw 9.27
++// but led to broken decode for compressed files from Sony DSC-RX1RM2
++//  } else if (!strcmp(make,"Sony") && raw_width == 8000) {
++//    width -= 32;
++//    if (!strncmp(model,"DSC",3)) {
++//      tiff_bps = 14;
++//      load_raw = &CLASS unpacked_load_raw;
++//      black = 512;
++//    }
+   } else if (!strcmp(model,"DSLR-A100")) {
+     if (width == 3880) {
+       height--;
+@@ -9357,6 +9474,18 @@
      memcpy (rgb_cam, cmatrix, sizeof cmatrix);
      raw_color = 0;
    }
@@ -1736,7 +1759,7 @@
    if (raw_color) adobe_coeff (make, model);
    if (load_raw == &CLASS kodak_radc_load_raw)
      if (raw_color) adobe_coeff ("Apple","Quicktake");
-@@ -9371,9 +9498,9 @@
+@@ -9371,9 +9500,9 @@
      if (raw_width  < width ) raw_width  = width;
    }
    if (!tiff_bps) tiff_bps = 12;
@@ -1748,7 +1771,7 @@
      is_raw = 0;
  #ifdef NO_JASPER
    if (load_raw == &CLASS redcine_load_raw) {
-@@ -9452,199 +9579,250 @@
+@@ -9452,199 +9581,250 @@
  }
  #endif
  
@@ -2182,7 +2205,7 @@
  struct tiff_tag {
    ushort tag, type;
    int count;
-@@ -9667,594 +9845,11 @@
+@@ -9667,594 +9847,11 @@
    char desc[512], make[64], model[64], soft[32], date[20], artist[64];
  };