diff --git a/benchmarks/abi_l1b_benchmarks.py b/benchmarks/abi_l1b_benchmarks.py
index 936e0dc514..574226a737 100644
--- a/benchmarks/abi_l1b_benchmarks.py
+++ b/benchmarks/abi_l1b_benchmarks.py
@@ -43,7 +43,7 @@ def setup_cache(self):
             if len(get_filenames(self.subdir)) != 16:
                 raise RuntimeError("Existing data files do not match the expected number of files.")
         download_rsr()
-        download_luts(aerosol_type="rayleigh_only")
+        download_luts(aerosol_types=["rayleigh_only"])
 
     def setup(self):
         """Set up the benchmarks."""
diff --git a/benchmarks/ahi_hsd_benchmarks.py b/benchmarks/ahi_hsd_benchmarks.py
index 361934168a..0a2dc65496 100644
--- a/benchmarks/ahi_hsd_benchmarks.py
+++ b/benchmarks/ahi_hsd_benchmarks.py
@@ -43,7 +43,7 @@ def setup_cache(self):
         except ImportError:
             assert len(get_filenames(self.subdir)) == 4  # nosec
         download_rsr()
-        download_luts(aerosol_type="rayleigh_only")
+        download_luts(aerosol_types=["rayleigh_only"])
 
     def setup(self):
         """Set up the benchmarks."""
diff --git a/benchmarks/seviri_hrit_benchmarks.py b/benchmarks/seviri_hrit_benchmarks.py
index 9851dbdac9..0d14320b48 100644
--- a/benchmarks/seviri_hrit_benchmarks.py
+++ b/benchmarks/seviri_hrit_benchmarks.py
@@ -43,7 +43,7 @@ def setup_cache(self):
         except ImportError:
             assert len(get_filenames(self.subdir)) == 114  # nosec
         download_rsr()
-        download_luts(aerosol_type="rayleigh_only")
+        download_luts(aerosol_types=["rayleigh_only"])
 
     def setup(self):
         """Set up the benchmarks."""
diff --git a/benchmarks/viirs_sdr_benchmarks.py b/benchmarks/viirs_sdr_benchmarks.py
index 68db5c6682..a98e02fa97 100644
--- a/benchmarks/viirs_sdr_benchmarks.py
+++ b/benchmarks/viirs_sdr_benchmarks.py
@@ -42,7 +42,7 @@ def setup_cache(self):
         except ImportError:
             assert len(self.get_filenames()) == 6 * 3  # nosec
         download_rsr()
-        download_luts(aerosol_type="rayleigh_only")
+        download_luts(aerosol_types=["rayleigh_only"])
 
     def setup(self, name):
         """Set up the benchmarks."""