diff --git a/rtdata/iccprofiles/input/Canon PowerShot G12.icc b/rtdata/iccprofiles/input/Canon PowerShot G12.icc
new file mode 100644
index 000000000..efc495d50
Binary files /dev/null and b/rtdata/iccprofiles/input/Canon PowerShot G12.icc differ
diff --git a/rtengine/dcraw.cc b/rtengine/dcraw.cc
index 6598b3846..23bf0f394 100644
--- a/rtengine/dcraw.cc
+++ b/rtengine/dcraw.cc
@@ -6262,12 +6262,12 @@ void CLASS adobe_coeff (const char *make, const char *model)
 	{ -5300,9846,1776,3436,684,3939,-5540,9879,6200,-1404,11175,217 } },
     { "Canon PowerShot A5", 0, 0,
 	{ -4801,9475,1952,2926,1611,4094,-5259,10164,5947,-1554,10883,547 } },
-    { "Canon PowerShot G10", 0, 0, /* RT */
+    { "Canon PowerShot G10", 0, 0,  /* RT */
 	{ 12535,-5030,-796,-2711,10134,3006,-413,1605,5264 } },
     { "Canon PowerShot G11", 0, 0,
 	{ 12177,-4817,-1069,-1612,9864,2049,-98,850,4471 } },
-    { "Canon PowerShot G12", 0, 0,
-	{ 13244,-5501,-1248,-1508,9858,1935,-270,1083,4366 } },
+    { "Canon PowerShot G12", 0, 0,  /* RT */
+	{ 12222,-4097,-1380,-2876,11016,2130,-888,1630,4434 } },
     { "Canon PowerShot G1", 0, 0,
 	{ -4778,9467,2172,4743,-1141,4344,-5146,9908,6077,-1566,11051,557 } },
     { "Canon PowerShot G2", 0, 0,
diff --git a/rtengine/dcraw.patch b/rtengine/dcraw.patch
index 2947fdeb6..7dae0c415 100644
--- a/rtengine/dcraw.patch
+++ b/rtengine/dcraw.patch
@@ -1,5 +1,5 @@
 --- C:/GCC/RT/RTSrc/rtengine/dcraw.c	Thu Dec 29 11:43:38 2011
-+++ C:/GCC/RT/RTSrc/rtengine/dcraw.cc	Thu Mar 15 18:15:28 2012
++++ C:/GCC/RT/RTSrc/rtengine/dcraw.cc	Fri Mar 16 15:48:27 2012
 @@ -1,3 +1,14 @@
 +/*RT*/#include <glib.h>
 +/*RT*/#include <glib/gstdio.h>
@@ -430,17 +430,23 @@
      { "Canon EOS-1D Mark II N", 0, 0xe80,
  	{ 6240,-466,-822,-8180,15825,2500,-1801,1938,8042 } },
      { "Canon EOS-1D Mark II", 0, 0xe80,
-@@ -6241,8 +6262,8 @@
+@@ -6241,12 +6262,12 @@
  	{ -5300,9846,1776,3436,684,3939,-5540,9879,6200,-1404,11175,217 } },
      { "Canon PowerShot A5", 0, 0,
  	{ -4801,9475,1952,2926,1611,4094,-5259,10164,5947,-1554,10883,547 } },
 -    { "Canon PowerShot G10", 0, 0,
 -	{ 11093,-3906,-1028,-5047,12492,2879,-1003,1750,5561 } },
-+    { "Canon PowerShot G10", 0, 0, /* RT */
++    { "Canon PowerShot G10", 0, 0,  /* RT */
 +	{ 12535,-5030,-796,-2711,10134,3006,-413,1605,5264 } },
      { "Canon PowerShot G11", 0, 0,
  	{ 12177,-4817,-1069,-1612,9864,2049,-98,850,4471 } },
-     { "Canon PowerShot G12", 0, 0,
+-    { "Canon PowerShot G12", 0, 0,
+-	{ 13244,-5501,-1248,-1508,9858,1935,-270,1083,4366 } },
++    { "Canon PowerShot G12", 0, 0,  /* RT */
++	{ 12222,-4097,-1380,-2876,11016,2130,-888,1630,4434 } },
+     { "Canon PowerShot G1", 0, 0,
+ 	{ -4778,9467,2172,4743,-1141,4344,-5146,9908,6077,-1566,11051,557 } },
+     { "Canon PowerShot G2", 0, 0,
 @@ -6302,7 +6323,7 @@
      { "Canon PowerShot SX1 IS", 0, 0,
  	{ 6578,-259,-502,-5974,13030,3309,-308,1058,4970 } },