diff --git a/data/devices/data-parse-test.py b/data/devices/data-parse-test.py
index 9db88e01..122f9be1 100755
--- a/data/devices/data-parse-test.py
+++ b/data/devices/data-parse-test.py
@@ -26,6 +26,7 @@
 
 import argparse
 import configparser
+import pathlib
 import re
 
 
@@ -220,8 +221,8 @@ def parse_data_file(path):
 
 if __name__ == "__main__":
     parser = argparse.ArgumentParser(description="Device data-file checker")
-    parser.add_argument('file', nargs='+')
+    parser.add_argument("directory")
     args = parser.parse_args()
-    for path in args.file:
+    for path in pathlib.Path(args.directory).glob("*.device"):
         validate_data_file_name(path)
         parse_data_file(path)
diff --git a/data/devices/duplicate-check.py b/data/devices/duplicate-check.py
index 332f1253..388517c9 100755
--- a/data/devices/duplicate-check.py
+++ b/data/devices/duplicate-check.py
@@ -24,6 +24,7 @@
 
 import argparse
 import os
+import pathlib
 import sys
 import configparser
 
@@ -40,11 +41,11 @@ def parse_data_file(path):
 
 if __name__ == "__main__":
     parser = argparse.ArgumentParser(description='Device duplicate match checker')
-    parser.add_argument('file', nargs='+')
+    parser.add_argument("directory")
     args = parser.parse_args()
     device_matches = {}
     duplicates = False
-    for path in args.file:
+    for path in pathlib.Path(args.directory).glob("*.device"):
         matches = parse_data_file(path)
         fname = os.path.basename(path)
         for m in matches:
diff --git a/data/devices/receiver-check.py b/data/devices/receiver-check.py
index ed115417..47d5c60f 100755
--- a/data/devices/receiver-check.py
+++ b/data/devices/receiver-check.py
@@ -24,6 +24,7 @@
 
 import argparse
 import os
+import pathlib
 import sys
 import configparser
 
@@ -61,10 +62,10 @@ def parse_data_file(path):
 
 if __name__ == "__main__":
     parser = argparse.ArgumentParser(description='Checks that no unifying receiver ID is in the device files')
-    parser.add_argument('file', nargs='+')
+    parser.add_argument("directory")
     args = parser.parse_args()
     receiver_found = False
-    for path in args.file:
+    for path in pathlib.Path(args.directory).glob("*.device"):
         matches = parse_data_file(path)
         fname = os.path.basename(path)
         for m in matches:
diff --git a/meson.build b/meson.build
index d79ae15a..30c145e6 100644
--- a/meson.build
+++ b/meson.build
@@ -371,13 +371,13 @@ install_data(data_files,
 	     install_dir : join_paths(get_option('datadir'), 'libratbag'))
 
 data_parse_test = find_program(join_paths(meson.source_root(), 'data/devices/data-parse-test.py'))
-test('data-parse-test', data_parse_test, args:  data_files)
+test('data-parse-test', data_parse_test, args: 'data/devices')
 
 duplicate_test = find_program(join_paths(meson.source_root(), 'data/devices/duplicate-check.py'))
-test('duplicate-test', duplicate_test, args : data_files)
+test('duplicate-test', duplicate_test, args : 'data/devices')
 
 reciever_id_test = find_program(join_paths(meson.source_root(), 'data/devices/receiver-check.py'))
-test('receiver-id-test', reciever_id_test, args : data_files)
+test('receiver-id-test', reciever_id_test, args : 'data/devices')
 
 #### tests ####
 enable_tests = get_option('tests')