diff --git a/tests/spoof/gs_feature_elision.py b/tests/spoof/gs_feature_elision.py
index c2aabeb4..3ec39367 100755
--- a/tests/spoof/gs_feature_elision.py
+++ b/tests/spoof/gs_feature_elision.py
@@ -22,7 +22,7 @@ not permitted in PDF/A-2, overprint mode not set"""
 def main():
     if '--version' in sys.argv:
         print('9.20')
-        print('SPOOFED: ' + os.path.basename(__filename__))
+        print('SPOOFED: ' + os.path.basename(__file__))
         sys.exit(0)
 
     gs_args = ['gs'] + sys.argv[1:]
diff --git a/tests/spoof/gs_pdfa_failure.py b/tests/spoof/gs_pdfa_failure.py
index 80c02b02..9842d3de 100755
--- a/tests/spoof/gs_pdfa_failure.py
+++ b/tests/spoof/gs_pdfa_failure.py
@@ -17,7 +17,7 @@ def real_ghostscript(argv):
 def main():
     if '--version' in sys.argv:
         print('9.20')
-        print('SPOOFED: ' + os.path.basename(__filename__))
+        print('SPOOFED: ' + os.path.basename(__file__))
         sys.exit(0)
 
     # Unless some argument is calling for PDFA generation, forward to
diff --git a/tests/spoof/gs_raster_failure.py b/tests/spoof/gs_raster_failure.py
index 35c96d0d..1976893c 100755
--- a/tests/spoof/gs_raster_failure.py
+++ b/tests/spoof/gs_raster_failure.py
@@ -16,7 +16,7 @@ def real_ghostscript(argv):
 def main():
     if '--version' in sys.argv:
         print('9.20')
-        print('SPOOFED: ' + os.path.basename(__filename__))
+        print('SPOOFED: ' + os.path.basename(__file__))
         sys.exit(0)
 
     # For any rendering calls (device == pdfwrite) call real ghostscript
diff --git a/tests/spoof/gs_render_failure.py b/tests/spoof/gs_render_failure.py
index 0c147aca..044193de 100755
--- a/tests/spoof/gs_render_failure.py
+++ b/tests/spoof/gs_render_failure.py
@@ -16,7 +16,7 @@ def real_ghostscript(argv):
 def main():
     if '--version' in sys.argv:
         print('9.20')
-        print('SPOOFED: ' + os.path.basename(__filename__))
+        print('SPOOFED: ' + os.path.basename(__file__))
         sys.exit(0)
 
     # For any rasterize calls (device != pdfwrite) call real ghostscript