diff --git a/src/allmydata/util/encodingutil.py b/src/allmydata/util/encodingutil.py
index ae54afb98..452cdc5b2 100644
--- a/src/allmydata/util/encodingutil.py
+++ b/src/allmydata/util/encodingutil.py
@@ -63,7 +63,11 @@ def _reload():
 
     is_unicode_platform = sys.platform in ["win32", "darwin"]
 
-    use_unicode_filepath = sys.platform == "win32" or hasattr(FilePath, '_asTextPath')
+    # Despite the Unicode-mode FilePath support added to Twisted in
+    # <https://twistedmatrix.com/trac/ticket/7805>, we can't yet use
+    # Unicode-mode FilePaths with INotify on non-Windows platforms
+    # due to <https://twistedmatrix.com/trac/ticket/7928>.
+    use_unicode_filepath = sys.platform == "win32"
 
 _reload()