diff --git a/lisainstrument/instrument.py b/lisainstrument/instrument.py
index 9f3368ed4c452d19958045eae18734d5736768ee..50751ab7c8d9a0583d5f94b69f651e0b0d258d9c 100755
--- a/lisainstrument/instrument.py
+++ b/lisainstrument/instrument.py
@@ -1514,10 +1514,10 @@ class Instrument:
         """
         logger.info("Generating laser noise for laser %s", mosa)
         self.laser_noises[mosa] = noises.laser(
-            self.physics_fs,
-            self.physics_size,
-            self.laser_asds[mosa],
-            self.laser_shape)
+            fs=self.physics_fs,
+            size=self.physics_size,
+            asd=self.laser_asds[mosa],
+            shape=self.laser_shape)
 
         logger.debug("Computing carrier offsets for primary local beam %s", mosa)
         self.local_carrier_offsets[mosa] = self.offset_freqs[mosa]