diff --git a/dap/algos/streakfind.py b/dap/algos/streakfind.py
index 1b32854..7584a23 100644
--- a/dap/algos/streakfind.py
+++ b/dap/algos/streakfind.py
@@ -152,11 +152,14 @@ def _calc_streakfinder_analysis(results, cryst_data: CrystData):
         return
 
     streaks = det_obj.to_streaks(detected)
+    detected_streaks = np.asarray(list(detected.streaks.values()))
+    streak_lines = streaks.lines
 
     if x_center is not None and y_center is not None:
         streaks_mask = streaks.concentric_only(x_center, y_center)
+        streak_lines = streak_lines[streaks_mask]
+        detected_streaks = detected_streaks[streaks_mask]
 
-    streak_lines = streaks.lines[streaks_mask]
     streak_lengths = np.sqrt(
         np.pow((streak_lines[..., 2] - streak_lines[..., 0]), 2) +
         np.pow((streak_lines[..., 2] - streak_lines[..., 0]), 2)
@@ -168,7 +171,6 @@ def _calc_streakfinder_analysis(results, cryst_data: CrystData):
 
     list_result = [line.tolist() for line in streak_lines]  # arr(4, n_lines); 0coord x0, y0, x1, y1
 
-    detected_streaks = np.asarray(detected.streaks.values())[streaks_mask]
     bragg_counts = [streak.total_mass() for streak in detected_streaks]
 
     results.update({"number_of_streaks": number_of_streaks})