diff --git a/copyparty/authsrv.py b/copyparty/authsrv.py
index 136683bd..6ba44390 100644
--- a/copyparty/authsrv.py
+++ b/copyparty/authsrv.py
@@ -447,11 +447,20 @@ class VFS(object):
 
     def canonical(self, rem: str, resolve: bool = True) -> str:
         """returns the canonical path (fully-resolved absolute fs path)"""
-        rp = self.realpath
+        ap = self.realpath
         if rem:
-            rp += "/" + rem
+            ap += "/" + rem
 
-        return absreal(rp) if resolve else rp
+        return absreal(ap) if resolve else ap
+
+    def dcanonical(self, rem: str) -> str:
+        """resolves until the final component (filename)"""
+        ap = self.realpath
+        if rem:
+            ap += "/" + rem
+
+        ad, fn = os.path.split(ap)
+        return os.path.join(absreal(ad), fn)
 
     def ls(
         self,
diff --git a/copyparty/httpcli.py b/copyparty/httpcli.py
index 791dcaee..15c815da 100644
--- a/copyparty/httpcli.py
+++ b/copyparty/httpcli.py
@@ -2491,7 +2491,7 @@ class HttpCli(object):
                 vpnodes.append([quotep(vpath) + "/", html_escape(node, crlf=True)])
 
         vn, rem = self.asrv.vfs.get(self.vpath, self.uname, False, False)
-        abspath = vn.canonical(rem)
+        abspath = vn.dcanonical(rem)
         dbv, vrem = vn.get_dbv(rem)
 
         try:
diff --git a/copyparty/util.py b/copyparty/util.py
index c2d981d2..574949ff 100644
--- a/copyparty/util.py
+++ b/copyparty/util.py
@@ -1330,8 +1330,24 @@ def gen_filekey_dbg(
 
     assert log_ptn
     if log_ptn.search(fspath):
-        t = "fk({}) salt({}) size({}) inode({}) fspath({})"
-        log(t.format(ret[:8], salt, fsize, inode, fspath))
+        try:
+            import inspect
+
+            ctx = ",".join(inspect.stack()[n][3] for n in range(2, 5))
+        except:
+            ctx = ""
+
+        try:
+            p2 = "a"
+            p2 = absreal(fspath)
+            if p2 != fspath:
+                raise Exception()
+        except:
+            t = "maybe wrong abspath for filekey;\norig: {}\nreal: {}"
+            log(t.format(fspath, p2), 1)
+
+        t = "fk({}) salt({}) size({}) inode({}) fspath({}) at({})"
+        log(t.format(ret[:8], salt, fsize, inode, fspath, ctx), 5)
 
     return ret