diff --git a/aider/analytics.py b/aider/analytics.py
index a1887e4a2..6295f9e3f 100644
--- a/aider/analytics.py
+++ b/aider/analytics.py
@@ -97,12 +97,12 @@ class Analytics:
         if not uuid_str:
             return False
 
-        # Convert percentage to hex threshold (1% = "04", 10% = "1a", etc)
-        # Using first 2 hex digits (0-ff) means each digit is 1/256 of the space
+        # Convert percentage to hex threshold (1% = "04...", 10% = "1a...", etc)
+        # Using first 6 hex digits
         if percent == 0:
             return False
-        threshold = format(int(255 * percent / 100), "02x")
-        return uuid_str[:2] <= threshold
+        threshold = format(int(0xFFFFFF * percent / 100), "06x")
+        return uuid_str[:6] <= threshold
 
     def get_data_file_path(self):
         data_file = Path.home() / ".aider" / "analytics.json"
diff --git a/tests/basic/test_analytics.py b/tests/basic/test_analytics.py
index 18194b1e8..dd25e12c8 100644
--- a/tests/basic/test_analytics.py
+++ b/tests/basic/test_analytics.py
@@ -113,6 +113,8 @@ def test_is_uuid_in_percentage():
     # Test basic percentage thresholds
     assert analytics.is_uuid_in_percentage("00000000000000000000000000000000", 1) is True
     assert analytics.is_uuid_in_percentage("01999000000000000000000000000000", 1) is True
+    assert analytics.is_uuid_in_percentage("02000000000000000000000000000000", 1) is True
+    assert analytics.is_uuid_in_percentage("02910000000000000000000000000001", 1) is False
     assert analytics.is_uuid_in_percentage("03000000000000000000000000000000", 1) is False
     assert analytics.is_uuid_in_percentage("ff000000000000000000000000000000", 1) is False