diff --git a/rtengine/camconst.json b/rtengine/camconst.json
index 2492eec28..9e6ec49b6 100644
--- a/rtengine/camconst.json
+++ b/rtengine/camconst.json
@@ -1245,6 +1245,11 @@ Camera constants:
         "ranges": { "white": 64886 }
     },
 
+    { // Quality C
+        "make_model": "FUJIFILM GFX 100",
+        "raw_crop": [ 0, 2, 11664, 8734 ]
+    },
+
     { // Quality B
         "make_model": "FUJIFILM GFX 50S",
         "dcraw_matrix": [ 11756,-4754,-874,-3056,11045,2305,-381,1457,6006 ], // DNGv9.9 D65
diff --git a/rtengine/dcraw.cc b/rtengine/dcraw.cc
index ceb40f279..68934314e 100644
--- a/rtengine/dcraw.cc
+++ b/rtengine/dcraw.cc
@@ -9279,6 +9279,8 @@ void CLASS identify()
     apply_tiff();
     if (!strcmp(model, "X-T3")) {
         height = raw_height - 2;
+    } else if (!strcmp(model, "GFX 100")) {
+        load_flags = 0;
     }
     if (!load_raw) {
       load_raw = &CLASS unpacked_load_raw;