diff --git a/lib/git/lib.rb b/lib/git/lib.rb
index d892462a..2d6c129d 100644
--- a/lib/git/lib.rb
+++ b/lib/git/lib.rb
@@ -1191,8 +1191,9 @@ def escape_for_sh(s)
     end
 
     def escape_for_windows(s)
-      # Windows does not need single quote escaping inside double quotes
-      %Q{"#{s}"}
+      # Escape existing double quotes in s and then wrap the result with double quotes
+      escaped_string = s.to_s.gsub('"','\\"')
+      %Q{"#{escaped_string}"}
     end
 
     def windows_platform?