diff --git a/chapters/install_windows.md b/chapters/install_windows.md
index 5ada64d..f262394 100644
--- a/chapters/install_windows.md
+++ b/chapters/install_windows.md
@@ -113,7 +113,7 @@ Main Service:
 
 Driver Service:
 
-* Name: **SysmonDrv unless --d \<name\> is**
+* Name: **SysmonDrv unless -d \<name\> is**
 
 * LogOn: **Local System**