diff --git a/starcheck/src/lib/Ska/Starcheck/Obsid.pm b/starcheck/src/lib/Ska/Starcheck/Obsid.pm
index c0d1e359..deb2c815 100644
--- a/starcheck/src/lib/Ska/Starcheck/Obsid.pm
+++ b/starcheck/src/lib/Ska/Starcheck/Obsid.pm
@@ -51,8 +51,8 @@ def _pixels_to_yagzag(i, j):
     This wrapper is set to pass allow_bad=True, as exceptions from the Python side
     in this case would not be helpful, and the very small bad pixel list should be
     on the CCD.
-    :params i: pixel row / i
-    :params j: pixel col / j
+    :params i: pixel row
+    :params j: pixel col
     :returns tuple: yag, zag as floats
     """
     yag, zag = pixels_to_yagzag(i, j, allow_bad=True)