diff --git a/test/test_source_base.py b/test/test_source_base.py
index c55c86bf5..f4634ebfa 100644
--- a/test/test_source_base.py
+++ b/test/test_source_base.py
@@ -42,16 +42,16 @@
     'openjpeg': {'read': r'\.(jp2)$'},
     'openslide': {
         'read': r'\.(ptif|svs|tif.*)$',
-        'noread': r'(oahu|DDX58_AXL|huron\.image2_jpeg2k|landcover_sample|d042-353\.crop)',
+        'noread': r'(oahu|DDX58_AXL|huron\.image2_jpeg2k|landcover_sample|d042-353\.crop|US_Geo\.)',
         'skipTiles': r'one_layer_missing'},
     'pil': {
         'read': r'\.(jpeg|png|tif.*)$',
-        'noread': r'(G10-3|JK-kidney|d042-353|huron|one_layer_missing)'},
+        'noread': r'(G10-3|JK-kidney|d042-353|huron|one_layer_missing|US_Geo)'},
     'test': {'any': True, 'skipTiles': r''},
     'tiff': {
         'read': r'\.(ptif|scn|svs|tif.*)$',
         'noread': r'(oahu|DDX58_AXL|G10-3_pelvis_crop|'
-                  r'd042-353\.crop\.small\.float|landcover_sample)',
+                  r'd042-353\.crop\.small\.float|landcover_sample|US_Geo\.)',
         'skipTiles': r'(sample_image\.ptif|one_layer_missing_tiles)'},
     'vips': {
         'read': r'',