diff --git a/calibrate.py b/calibrate.py
index 94cf27454..a611576d3 100755
--- a/calibrate.py
+++ b/calibrate.py
@@ -480,7 +480,7 @@ def detect_markers_corners(self, frame):
                                                                                 rejectedCorners=rejectedImgPoints)
         if len(marker_corners) <= 0:
             return marker_corners, ids, None, None
-        ret, charuco_corners, charuco_ids = cv2.aruco.interpolateCornersCharuco(marker_corners, ids, frame, self.charuco_board)
+        ret, charuco_corners, charuco_ids = cv2.aruco.interpolateCornersCharuco(marker_corners, ids, frame, self.charuco_board, minMarkers = 1)
         return marker_corners, ids, charuco_corners, charuco_ids
 
     def draw_markers(self, frame):
diff --git a/charuco_boards_user_calib/charuco_24inch_13x7.pdf b/charuco_boards_user_calib/charuco_24inch_13x7.pdf
index e77bfb47f..e020e7805 100644
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diff --git a/charuco_boards_user_calib/charuco_28inch_15x8.pdf b/charuco_boards_user_calib/charuco_28inch_15x8.pdf
index 10b80e78f..f8b36c061 100644
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diff --git a/charuco_boards_user_calib/charuco_32inch_17x9.pdf b/charuco_boards_user_calib/charuco_32inch_17x9.pdf
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diff --git a/charuco_boards_user_calib/charuco_36inch_19x11.pdf b/charuco_boards_user_calib/charuco_36inch_19x11.pdf
index 877266589..0055520ed 100644
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diff --git a/charuco_boards_user_calib/charuco_42inch_22x12.pdf b/charuco_boards_user_calib/charuco_42inch_22x12.pdf
index 9790cab3d..4de71b3e8 100644
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diff --git a/charuco_boards_user_calib/charuco_50inch_27x15.pdf b/charuco_boards_user_calib/charuco_50inch_27x15.pdf
index 76d58ffb1..d8592441a 100644
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diff --git a/charuco_boards_user_calib/charuco_55inch_30x17.pdf b/charuco_boards_user_calib/charuco_55inch_30x17.pdf
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diff --git a/charuco_boards_user_calib/charuco_65inch_35x20.pdf b/charuco_boards_user_calib/charuco_65inch_35x20.pdf
index 8f7d114b4..f2fd9c942 100644
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diff --git a/charuco_boards_user_calib/charuco_75inch_41x23.pdf b/charuco_boards_user_calib/charuco_75inch_41x23.pdf
index 71860d8b9..ce6fa58b4 100644
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