diff --git a/nenupy/__init__.py b/nenupy/__init__.py
index 7a17693..b088fb7 100644
--- a/nenupy/__init__.py
+++ b/nenupy/__init__.py
@@ -5,7 +5,7 @@
 __copyright__ = "Copyright 2023, nenupy"
 __credits__ = ["Alan Loh"]
 __license__ = "MIT"
-__version__ = "2.3.14"
+__version__ = "2.3.15"
 __maintainer__ = "Alan Loh"
 __email__ = "alan.loh@obspm.fr"
 
diff --git a/nenupy/schedule/contamination.py b/nenupy/schedule/contamination.py
index 26f8db3..d3cfccf 100644
--- a/nenupy/schedule/contamination.py
+++ b/nenupy/schedule/contamination.py
@@ -157,7 +157,7 @@ def export(self, filename: str , in_bytes: bool = False) -> None:
         )
         freq_mhz = self.frequency.to_value(u.MHz)
         freq_hdu = fits.BinTableHDU.from_columns(
-            [fits.Column(name="freq_mhz", format="f8", array=freq_mhz)]
+            [fits.Column(name="frequency_mhz", format="f8", array=freq_mhz)]
         )
 
         data = np.zeros(f_size, dtype=dtype)