diff --git a/database_update.py b/database_update.py
index 7299e709af4b8f1defa12bc0e88fcfb86df35a34..3aa237c20ef414616c79ebd82270bb4d29fec948 100644
--- a/database_update.py
+++ b/database_update.py
@@ -302,10 +302,10 @@ def update_camera_params(db, camera_id, model, new_params):
     )
 
 def update_images_params(db, image_id, new_data):
-    (qw, qz, qy, qz, tx, ty, tz, fname) = new_data
+    (qw, qx, qy, qz, tx, ty, tz, fname) = new_data
     db.execute(
         "UPDATE images SET prior_qw = ?, prior_qx = ?, prior_qy = ?, prior_qz = ?, prior_tx = ?, prior_ty = ?, prior_tz = ? WHERE image_id = ?",
-        (qw, qz, qy, qz, tx, ty, tz, image_id),
+        (qw, qx, qy, qz, tx, ty, tz, image_id),
     )
 
 def example_usage():
@@ -356,10 +356,10 @@ def example_usage():
             parts = line.strip().split()
             if len(parts) > 0:
                 img_id = parts[-1]
-                qw, qz, qy, qz = np.array(parts[1:5]).astype(float)
+                qw, qx, qy, qz = np.array(parts[1:5]).astype(float)
                 tx, ty, tz = np.array(parts[5:-2]).astype(float)
                 fname = parts[-1]
-                images.append((qw, qz, qy, qz, tx, ty, tz, fname))
+                images.append((qw, qx, qy, qz, tx, ty, tz, fname))
                 
     rows = db.execute("SELECT * FROM images")
     for img in rows: