diff --git a/src/stitching_scanner.py b/src/stitching_scanner.py
index 70077b7..465ff0b 100644
--- a/src/stitching_scanner.py
+++ b/src/stitching_scanner.py
@@ -440,7 +440,7 @@ class StitchingScanner:
             offset.x_offset = dx
             offset.y_offset = dy
             offset.confidence = confidence
-            offset.valid = true #confidence > 0.1  # Require minimum confidence
+            offset.valid = True #confidence > 0.1  # Require minimum confidence
             
             if offset.valid:
                 self.log(f"  Strip alignment: X={dx:.1f}, Y={dy:.1f}, conf={confidence:.3f}")