diff --git a/res/pokemon/meson.build b/res/pokemon/meson.build
index acd398f728..3a963fd00e 100644
--- a/res/pokemon/meson.build
+++ b/res/pokemon/meson.build
@@ -24,6 +24,7 @@ otherpoke_shared = files(
     '.shared/shadows.png',
 )
 
+sinnoh_pokedex = files('sinnoh_pokedex.json')
 
 # Process mons in national dex order
 pokemon_subdirs = [
@@ -735,7 +736,7 @@ pl_pokezukan_narc = custom_target('pl_pokezukan.narc',
         '--source-dir', '@CURRENT_SOURCE_DIR@',
         '--private-dir', '@PRIVATE_DIR@',
         '--output-dir', '@OUTDIR@',
-        pokemon_subdirs
+        sinnoh_pokedex
     ]
 )
 
@@ -749,7 +750,7 @@ shinzukan_narc = custom_target('shinzukan.narc',
         '--source-dir', '@CURRENT_SOURCE_DIR@',
         '--private-dir', '@PRIVATE_DIR@',
         '--output-dir', '@OUTDIR@',
-        pokemon_subdirs
+        sinnoh_pokedex
     ]
 )
 
diff --git a/tools/scripts/make_pl_pokezukan.py b/tools/scripts/make_pl_pokezukan.py
index a946d04d92..c90571bbe4 100644
--- a/tools/scripts/make_pl_pokezukan.py
+++ b/tools/scripts/make_pl_pokezukan.py
@@ -23,9 +23,8 @@ argparser.add_argument('-p', '--private-dir',
 argparser.add_argument('-o', '--output-dir',
                        required=True,
                        help='Path to the output directory (where the NARC will be made)')
-argparser.add_argument('subdirs',
-                       nargs='+',
-                       help='List of subdirectories to process in-order')
+argparser.add_argument('pokedex',
+                       help='List of pokemon in the Sinnoh Pokedex')
 args = argparser.parse_args()
 
 source_dir = pathlib.Path(args.source_dir)
@@ -38,7 +37,7 @@ NUM_POKEMON = 494
 
 pokedex = [0 for i in range(NUM_POKEMON)]
 
-with open(source_dir / 'sinnoh_pokedex.json') as data_file:
+with open(args.pokedex) as data_file:
     dex_data = json.load(data_file)
     for i, mon in enumerate(dex_data):
         pokedex[PokemonSpecies[mon].value] = i
diff --git a/tools/scripts/make_shinzukan.py b/tools/scripts/make_shinzukan.py
index bf31152314..d0f44a871d 100644
--- a/tools/scripts/make_shinzukan.py
+++ b/tools/scripts/make_shinzukan.py
@@ -23,9 +23,8 @@ argparser.add_argument('-p', '--private-dir',
 argparser.add_argument('-o', '--output-dir',
                        required=True,
                        help='Path to the output directory (where the NARC will be made)')
-argparser.add_argument('subdirs',
-                       nargs='+',
-                       help='List of subdirectories to process in-order')
+argparser.add_argument('pokedex',
+                       help='List of pokemon in the Sinnoh Pokedex')
 args = argparser.parse_args()
 
 source_dir = pathlib.Path(args.source_dir)
@@ -38,7 +37,7 @@ NUM_SINNOH = 211
 
 pokedex = [0 for i in range(NUM_SINNOH)]
 
-with open(source_dir / 'sinnoh_pokedex.json') as data_file:
+with open(args.pokedex) as data_file:
     dex_data = json.load(data_file)
     for i, mon in enumerate(dex_data):
         pokedex[i] = PokemonSpecies[mon].value