diff --git a/resources/projections_settings/metop_abc_avhrr.json b/resources/projections_settings/metop_abc_avhrr.json
index f17b3df84..7477784f1 100644
--- a/resources/projections_settings/metop_abc_avhrr.json
+++ b/resources/projections_settings/metop_abc_avhrr.json
@@ -1,7 +1,7 @@
 {
     "type": "normal_single_line_old",
     "scan_angle": 110.6,
-    "roll_offset": -0.13,
+    "roll_offset": -0.03, //-0.13,
     "timestamp_offset": -0.1,
     "image_width": 2048,
     "gcp_spacing_x": 100,
diff --git a/tools/proj_test/main.cpp b/tools/proj_test/main.cpp
index 0f3fbc250..6adbb99a9 100644
--- a/tools/proj_test/main.cpp
+++ b/tools/proj_test/main.cpp
@@ -56,7 +56,7 @@ int main(int /*argc*/, char *argv[])
     printf("\n%s\n", img_pro.contents.dump(4).c_str());
 
     satdump::ImageCompositeCfg rgb_cfg;
-    rgb_cfg.equation = "ch2,ch2,ch1"; //"(ch7421+ch7422+ch7423+ch7242)/4";
+    rgb_cfg.equation = "ch4"; //"(ch7421+ch7422+ch7423+ch7242)/4";
     //    rgb_cfg.equation = "1-ch37";
     // rgb_cfg.equation = "1-ch33,1-ch34,1-ch35"; //"(ch3 * 0.4 + ch2 * 0.6) * 2.2 - 0.15, ch2 * 2.2 - 0.15, ch1 * 2.2 - 0.15";
     rgb_cfg.individual_equalize = true;