diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index c6da2e890c1ad..57273ebbfeda5 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -2121,13 +2121,23 @@ bool CWallet::Verify()
 
     uiInterface.InitMessage(_("Verifying wallet(s)..."));
 
+    // Keep track of each wallet absolute path to detect duplicates.
+    std::set<fs::path> wallet_paths;
+
     for (const std::string& walletFile : gArgs.GetArgs("-wallet")) {
         if (fs::path(walletFile).filename() != walletFile) {
             return UIError(strprintf(_("%s parameter must only specify a filename (not a path)"), "-wallet"));
-        } else if (SanitizeString(walletFile, SAFE_CHARS_FILENAME) != walletFile) {
+        }
+        if (SanitizeString(walletFile, SAFE_CHARS_FILENAME) != walletFile) {
             return UIError(strprintf(_("Invalid characters in %s filename"), "-wallet"));
         }
 
+        fs::path wallet_path = fs::absolute(walletFile, GetDataDir());
+
+        if (!wallet_paths.insert(wallet_path).second) {
+            return UIError(strprintf(_("Duplicate %s filename"), "-wallet"));
+        }
+
         std::string strError;
         if (!CWalletDB::VerifyEnvironment(walletFile, GetDataDir().string(), strError)) {
             return UIError(strError);
diff --git a/test/functional/wallet_multiwallet.py b/test/functional/wallet_multiwallet.py
index 317789f5cc1bf..75c751fe64396 100755
--- a/test/functional/wallet_multiwallet.py
+++ b/test/functional/wallet_multiwallet.py
@@ -37,8 +37,7 @@ def run_test(self):
         #self.assert_start_raises_init_error(0, ['-walletdir=debug.log'], 'Error: Specified -walletdir "debug.log" is not a directory', cwd=data_dir())
 
         # should not initialize if there are duplicate wallets
-        # !TODO: backport bitcoin#10885
-        #self.assert_start_raises_init_error(0, ['-wallet=w1', '-wallet=w1'], 'Error loading wallet w1. Duplicate -wallet filename specified.')
+        self.assert_start_raises_init_error(0, ['-wallet=w1', '-wallet=w1'], 'Duplicate -wallet filename')
 
         # should not initialize if wallet file is a directory
         # !TODO: backport bitcoin#11476 + bitcoin#11970