diff --git a/AESFile/aesfile.py b/AESFile/aesfile.py
index 891f9a7..f628878 100644
--- a/AESFile/aesfile.py
+++ b/AESFile/aesfile.py
@@ -110,7 +110,7 @@ def main(argv):
     p_decrypt.set_defaults(func=decrypt_argparse)
 
     args = parser.parse_args(argv)
-    args.func(args)
+    return args.func(args)
 
 if __name__ == '__main__':
-    main(sys.argv[1:])
+    raise SystemExit(main(sys.argv[1:]))
diff --git a/BlurredLetterbox/blurredletterbox.py b/BlurredLetterbox/blurredletterbox.py
index 3e062a2..134cdc4 100644
--- a/BlurredLetterbox/blurredletterbox.py
+++ b/BlurredLetterbox/blurredletterbox.py
@@ -99,4 +99,4 @@ def main(argv):
     image.save(new_name)
 
 if __name__ == '__main__':
-    main(sys.argv[1:])
\ No newline at end of file
+    raise SystemExit(main(sys.argv[1:]))
diff --git a/OpenDirDL/opendirdl.py b/OpenDirDL/opendirdl.py
index 4993ef6..6e6658b 100644
--- a/OpenDirDL/opendirdl.py
+++ b/OpenDirDL/opendirdl.py
@@ -1006,7 +1006,7 @@ def main(argv):
     #print(argv)
 
     args = parser.parse_args(argv)
-    args.func(args)
+    return args.func(args)
 
 if __name__ == '__main__':
-    main(sys.argv[1:])
+    raise SystemExit(main(sys.argv[1:]))
diff --git a/OpenDirDL/pathtree.py b/OpenDirDL/pathtree.py
index c9ecc1b..e6a545b 100644
--- a/OpenDirDL/pathtree.py
+++ b/OpenDirDL/pathtree.py
@@ -286,7 +286,7 @@ def main(argv):
     parser.set_defaults(func=pathtree_argparse)
 
     args = parser.parse_args(argv)
-    args.func(args)
+    return args.func(args)
 
 if __name__ == '__main__':
-    main(sys.argv[1:])
+    raise SystemExit(main(sys.argv[1:]))
diff --git a/Piecewise/piecewise.py b/Piecewise/piecewise.py
index 4749a18..b442b52 100644
--- a/Piecewise/piecewise.py
+++ b/Piecewise/piecewise.py
@@ -166,7 +166,7 @@ def main(argv):
     p_download.set_defaults(func=download_argparse)
 
     args = parser.parse_args(argv)
-    args.func(args)
+    return args.func(args)
 
 if __name__ == '__main__':
-    main(sys.argv[1:])
+    raise SystemExit(main(sys.argv[1:]))
diff --git a/PixelsToSVG/pixelstosvg.py b/PixelsToSVG/pixelstosvg.py
index f3cb2f5..ce4e814 100644
--- a/PixelsToSVG/pixelstosvg.py
+++ b/PixelsToSVG/pixelstosvg.py
@@ -128,7 +128,7 @@ def main(argv):
     parser.set_defaults(func=image_to_svg_argparse)
 
     args = parser.parse_args(argv)
-    args.func(args)
+    return args.func(args)
 
 if __name__ == '__main__':
-    main(sys.argv[1:])
+    raise SystemExit(main(sys.argv[1:]))
diff --git a/ThreadedDL/threaded_dl.py b/ThreadedDL/threaded_dl.py
index 8fab6aa..e6bc4c0 100644
--- a/ThreadedDL/threaded_dl.py
+++ b/ThreadedDL/threaded_dl.py
@@ -102,7 +102,7 @@ def main(argv):
     parser.set_defaults(func=threaded_dl_argparse)
 
     args = parser.parse_args(argv)
-    args.func(args)
+    return args.func(args)
 
 if __name__ == '__main__':
     raise SystemExit(main(sys.argv[1:]))
diff --git a/VoxelSphereGenerator/voxelspheregenerator.py b/VoxelSphereGenerator/voxelspheregenerator.py
index 9e2ba5a..e63a0ab 100644
--- a/VoxelSphereGenerator/voxelspheregenerator.py
+++ b/VoxelSphereGenerator/voxelspheregenerator.py
@@ -287,7 +287,7 @@ def main(argv):
     parser.set_defaults(func=voxelsphere_argparse)
 
     args = parser.parse_args(argv)
-    args.func(args)
+    return args.func(args)
 
 if __name__ == '__main__':
-    main(sys.argv[1:])
+    raise SystemExit(main(sys.argv[1:]))