diff --git a/instaloader/__main__.py b/instaloader/__main__.py
index ad66827..9862960 100644
--- a/instaloader/__main__.py
+++ b/instaloader/__main__.py
@@ -16,20 +16,10 @@ from .instaloader import get_default_session_filename
 from .instaloadercontext import default_user_agent
 
 
-def get_simple_argv0() -> str:
-    if platform.system() != "Windows":
-        argv0 = os.path.basename(sys.argv[0])
-    else:
-        dirname = os.path.relpath(os.path.dirname(sys.argv[0]))
-        basename = os.path.basename(sys.argv[0])
-        argv0 = os.path.join(dirname, basename)
-    argv0 = "instaloader" if argv0 == "__main__.py" else argv0
-    return argv0
-
-
 def usage_string():
     # NOTE: duplicated in README.rst and docs/index.rst
-    argv0 = get_simple_argv0()
+    argv0 = os.path.basename(sys.argv[0])
+    argv0 = "instaloader" if argv0 == "__main__.py" else argv0
     return """
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