diff --git a/poses/colmap_wrapper.py b/poses/colmap_wrapper.py
index 53ab08f..b0f80b4 100644
--- a/poses/colmap_wrapper.py
+++ b/poses/colmap_wrapper.py
@@ -32,7 +32,7 @@ def run_colmap(basedir, match_type):
             '--database_path', os.path.join(basedir, 'database.db'),
             '--image_path', os.path.join(basedir, 'images'),
             '--ImageReader.single_camera', '1',
-            # '--SiftExtraction.use_gpu', '0',
+            #'--SiftExtraction.use_gpu', '0', # Use CPU only, comment to use GPU
     ]
     logging.debug("Extracting features.")
     feat_output = subprocess.check_output(feature_extractor_args, universal_newlines=True)