diff --git a/rtengine/camconst.json b/rtengine/camconst.json
index ae50369e5..128ba3e24 100644
--- a/rtengine/camconst.json
+++ b/rtengine/camconst.json
@@ -1481,11 +1481,10 @@ Camera constants:
         }
     },
 
-    { // Quality C
-        "make_model": "Nikon COOLPIX P1000",
-        "ranges": {
-            "black": 200
-        }
+    { // Quality B
+        "make_model": "NIKON COOLPIX P1000",
+        "dcraw_matrix": [ 14294, -6116, -1333, -1628, 10219, 1637, -14, 1158, 5022 ], // ColorMatrix2 from Adobe DNG Converter 11.4
+        "ranges": { "black": 200 }
     },
 
     { // Quality B, no LENR samples