diff --git a/Assets/Scripts/ImportGltfast.cs b/Assets/Scripts/ImportGltfast.cs
index 25a926d9f..c0ae652fb 100644
--- a/Assets/Scripts/ImportGltfast.cs
+++ b/Assets/Scripts/ImportGltfast.cs
@@ -120,7 +120,10 @@ private static async Task _ImportUsingUnityGltf(
             try
             {
                 ImportOptions options = new ImportOptions();
-                GLTFSceneImporter gltf = new GLTFSceneImporter(localPath, options);
+
+                // See https://github.com/KhronosGroup/UnityGLTF/issues/805
+                var uriPath = $"file:///{ Uri.UnescapeDataString(localPath).Replace("\\","/")}";
+                GLTFSceneImporter gltf = new GLTFSceneImporter(uriPath, options);
 
                 gltf.IsMultithreaded = false;
                 AsyncHelpers.RunSync(() => gltf.LoadSceneAsync());
diff --git a/Assets/Scripts/Poly/IcosaRawAsset.cs b/Assets/Scripts/Poly/IcosaRawAsset.cs
index b845c0e10..70dfd5f1a 100644
--- a/Assets/Scripts/Poly/IcosaRawAsset.cs
+++ b/Assets/Scripts/Poly/IcosaRawAsset.cs
@@ -144,8 +144,9 @@ public bool WriteToDisk()
                 UnityEngine.Debug.LogErrorFormat("Caller did not create directory for me: {0}", assetDir);
             }
             string rootFilePath = Path.Combine(assetDir, GetPolySanitizedFilePath(m_RootElement.filePath));
+            var unescapedRootFilePath = Uri.UnescapeDataString(rootFilePath);
             if (!FileUtils.InitializeDirectory(Path.GetDirectoryName(rootFilePath)) ||
-                !FileUtils.WriteBytesIgnoreExceptions(m_RootElement.assetBytes, rootFilePath))
+                !FileUtils.WriteBytesIgnoreExceptions(m_RootElement.assetBytes, unescapedRootFilePath))
             {
                 return false;
             }
@@ -155,8 +156,9 @@ public bool WriteToDisk()
             for (int j = 0; j < m_ResourceElements.Count; ++j)
             {
                 string filePath = Path.Combine(assetDir, GetPolySanitizedFilePath(m_ResourceElements[j].filePath));
+                string unescapedFilePath = Uri.UnescapeDataString(filePath);
                 if (!FileUtils.InitializeDirectory(Path.GetDirectoryName(filePath)) ||
-                    !FileUtils.WriteBytesIgnoreExceptions(m_ResourceElements[j].assetBytes, filePath))
+                    !FileUtils.WriteBytesIgnoreExceptions(m_ResourceElements[j].assetBytes, unescapedFilePath))
                 {
                     RemoveFiles(written);
                     return false;