diff --git a/astrodbkit2/tests/test_spectra.py b/astrodbkit2/tests/test_spectra.py
index f47d4e6..5a67a92 100644
--- a/astrodbkit2/tests/test_spectra.py
+++ b/astrodbkit2/tests/test_spectra.py
@@ -13,7 +13,8 @@
 
 @pytest.fixture(scope="module")
 def good_spex_file():
-    n = np.empty((564, 3))
+    fake_data = np.arange(1, 10, 1)
+    n = np.array([fake_data, fake_data, fake_data])
     hdr = fits.Header()
     hdr['TELESCOP'] = 'NASA IRTF'
     hdr['INSTRUME'] = 'SPeX, IRTF Spectrograph'
@@ -26,7 +27,8 @@ def good_spex_file():
 
 @pytest.fixture(scope="module")
 def bad_spex_file():
-    n = np.empty((564, 3))
+    fake_data = np.arange(1, 10, 1)
+    n = np.array([fake_data, fake_data, fake_data])
     hdr = fits.Header()
     hdr['TELESCOP'] = 'MISSING'
     hdr['INSTRUME'] = 'MISSING'