diff --git a/tests/leaks_test.py b/tests/leaks_test.py
index 8d77e482..b4daff6a 100644
--- a/tests/leaks_test.py
+++ b/tests/leaks_test.py
@@ -85,10 +85,10 @@ def perform_open_to_numpy(iterations, image_path):
 
 
 @pytest.mark.skipif(sys.platform.lower() == "win32", reason="requires Unix or macOS")
-@pytest.mark.skipif(machine().find("armv7") != -1, reason="skip on 32 bit arm")
+@pytest.mark.skipif(machine().find("x86_64") == -1, reason="run only on x86_64")
 def test_open_to_numpy_mem_leaks():
     mem_limit = None
-    for i in range(1000):
+    for i in range(500):
         perform_open_to_numpy(1, Path("images/rgb8_512_512_1_0.heic"))
         gc.collect()
         mem = _get_mem_usage()