diff --git a/janet-installer.nsi b/janet-installer.nsi
index 8d354463..8d74988d 100644
--- a/janet-installer.nsi
+++ b/janet-installer.nsi
@@ -128,9 +128,9 @@ section "uninstall"
  
 	# Remove files
     delete "$INSTDIR\logo.ico"
-    rmdir /S "$INSTDIR\Library"
-    rmdir /S "$INSTDIR\bin"
-    rmdir /S "$INSTDIR\C"
+    rmdir /r "$INSTDIR\Library"
+    rmdir /r "$INSTDIR\bin"
+    rmdir /r "$INSTDIR\C"
     
     # Remove env vars
 
diff --git a/tools/cook.janet b/tools/cook.janet
index 95283a05..173578f4 100644
--- a/tools/cook.janet
+++ b/tools/cook.janet
@@ -164,7 +164,7 @@
 (defn copy
   "Copy a file or directory recursively from one location to another."
   [src dest]
-  (shell (if is-win "xcopy " "cp -rf ") `"` src `" "` dest (if is-win `" /h /y /e` `"`)))
+  (shell (if is-win "xcopy " "cp -rf ") `"` src `" "` dest (if is-win `" /y /e` `"`)))
 
 #
 # C Compilation