diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index 22012ded28b..774244b6834 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -45,6 +45,7 @@ END TEMPLATE-->
 
 * Fix DynamicTree.Clear not removing node references.
 * Reverted validation for `UiBox2i` `ctor`s as it was causing regressions in debug UIs.
+* Fix windows Robust.Packaging not using correct path separators for zip archives.
 
 ### Other
 
diff --git a/Robust.Packaging/RobustSharedPackaging.cs b/Robust.Packaging/RobustSharedPackaging.cs
index a2a23bf7820..0f2abe6b6f6 100644
--- a/Robust.Packaging/RobustSharedPackaging.cs
+++ b/Robust.Packaging/RobustSharedPackaging.cs
@@ -73,6 +73,9 @@ public static Task DoResourceCopy(
                 continue;
 
             var targetPath = Path.Combine(targetDir, filename);
+            if (Path.DirectorySeparatorChar != '/')
+                targetPath = targetPath.Replace(Path.DirectorySeparatorChar, '/');
+
             if (Directory.Exists(path))
                 CopyDirIntoZip(path, targetPath, pass);
             else