diff --git a/xpinstall/packager/windows/makeall.pl b/xpinstall/packager/windows/makeall.pl
index 9b5b93c34bc5..1a5e171df5a4 100644
--- a/xpinstall/packager/windows/makeall.pl
+++ b/xpinstall/packager/windows/makeall.pl
@@ -58,7 +58,7 @@ if(!(-e "$inStagePath"))
 # Make sure inDestPath exists
 if(!(-e "$inDistPath"))
 {
-  system("mkdir /s $inDestPath");
+  system("mkdir $inDestPath");
 }
 
 MakeConfigFile();
@@ -79,7 +79,7 @@ if(-e "$inDistPath\\setup")
 }
 else
 {
-  system("mkdir /s $inDistPath\\setup");
+  system("mkdir $inDistPath\\setup");
 }
 
 # Copy the setup files to the dist setup directory.
diff --git a/xpinstall/packager/windows/makexpi.pl b/xpinstall/packager/windows/makexpi.pl
index 56bc2a888f9b..13d0e9e39e64 100644
--- a/xpinstall/packager/windows/makexpi.pl
+++ b/xpinstall/packager/windows/makexpi.pl
@@ -85,7 +85,7 @@ if(-e "install.js")
 # make sure inDestPath exists
 if(!(-e "$inDestPath"))
 {
-  system("mkdir /s $inDestPath");
+  system("mkdir $inDestPath");
 }
 
 print "\n Making $inComponentName.xpi...\n";