diff --git a/Doc/library/dis.rst b/Doc/library/dis.rst
index bc206f7d2e96af..7ea2bfde9f69e5 100644
--- a/Doc/library/dis.rst
+++ b/Doc/library/dis.rst
@@ -41,6 +41,10 @@ the following command can be used to display the disassembly of
 
 (The "2" is a line number).
 
+:mod:`dis` an also be invoked as a script to disassemble other scripts. For example::
+
+     python -m dis myscript.py
+
 Bytecode analysis
 -----------------
 
diff --git a/Lib/dis.py b/Lib/dis.py
index 48a6ab8e41df3f..2f53f4f820c1fc 100644
--- a/Lib/dis.py
+++ b/Lib/dis.py
@@ -566,7 +566,7 @@ def dis(self):
             return output.getvalue()
 
 
-def _test():
+def main():
     """Simple test program to disassemble a file."""
     import argparse
 
@@ -579,4 +579,4 @@ def _test():
     dis(code)
 
 if __name__ == "__main__":
-    _test()
+    main()