diff --git a/portable/advanced/Check-PowerShell.ps1 b/portable/advanced/Check-PowerShell.ps1
index e4ed7e9..a715c2b 100644
--- a/portable/advanced/Check-PowerShell.ps1
+++ b/portable/advanced/Check-PowerShell.ps1
@@ -1,7 +1,7 @@
 # Parses every .ps1 in the repository and reports syntax errors.
 #
 # Why this exists: most of this project's PowerShell was written on a Mac, where
-# no parser is available. "It looks right" is not a check — a single stray
+# no parser is available. "It looks right" is not a check -- a single stray
 # character stops the Windows installer from running at all, and there is no way
 # to find that out except on Windows.
 #