diff --git a/fixms/fix_ms_corrs.py b/fixms/fix_ms_corrs.py
index bee89ce..992f05b 100644
--- a/fixms/fix_ms_corrs.py
+++ b/fixms/fix_ms_corrs.py
@@ -33,6 +33,10 @@ def set_pol_axis(ms: Path, pol_ang: u.Quantity, feed_idx: Optional[int] = None)
 
     # Backup the original RECEPTOR_ANGLE to INSTRUMENT_RECEPTOR_ANGLE
     with table((ms / "FEED").as_posix(), readonly=False, ack=False) as tf:
+        coldesc = makecoldesc(
+            "INSTRUMENT_RECEPTOR_ANGLE", tf.getcoldesc("RECEPTOR_ANGLE")
+        )
+        tf.addcols(coldesc)
         tf.putcol("INSTRUMENT_RECEPTOR_ANGLE", ms_feed.to(u.rad).value)
         tf.flush()
     logger.info("Backed up the original RECEPTOR_ANGLE to INSTRUMENT_RECEPTOR_ANGLE")
diff --git a/pyproject.toml b/pyproject.toml
index f15f799..c646fb5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "fixms"
-version = "0.2.5"
+version = "0.2.6"
 description = ""
 authors = ["Alec Thomson (S&A, Kensington WA) <alec.thomson@csiro.au>"]
 readme = "README.md"