diff --git a/src/actions/mediaLibrary.js b/src/actions/mediaLibrary.js
index 4ba512a53e3f..2af3386779f9 100644
--- a/src/actions/mediaLibrary.js
+++ b/src/actions/mediaLibrary.js
@@ -4,6 +4,7 @@ import { createAssetProxy } from 'ValueObjects/AssetProxy';
 import { getAsset, selectIntegration } from 'Reducers';
 import { getIntegrationProvider } from 'Integrations';
 import { addAsset } from './media';
+import { sanitizeSlug } from "Lib/urlHelper";
 
 const { notifSend } = notifActions;
 
@@ -79,7 +80,8 @@ export function persistMedia(file, opts = {}) {
     const backend = currentBackend(state.config);
     const integration = selectIntegration(state, null, 'assetStore');
     const files = state.mediaLibrary.get('files');
-    const existingFile = files.find(existingFile => existingFile.name.toLowerCase() === file.name.toLowerCase());
+    const fileName = sanitizeSlug(file.name.toLowerCase(), { slugType: state.config.get('slug_type') });
+    const existingFile = files.find(existingFile => existingFile.name.toLowerCase() === fileName);
 
     /**
      * Check for existing files of the same name before persisting. If no asset
@@ -98,7 +100,7 @@ export function persistMedia(file, opts = {}) {
     dispatch(mediaPersisting());
 
     try {
-      const assetProxy = await createAssetProxy(file.name.toLowerCase(), file, false, privateUpload);
+      const assetProxy = await createAssetProxy(fileName, file, false, privateUpload);
       dispatch(addAsset(assetProxy));
       if (!integration) {
         const asset = await backend.persistMedia(assetProxy);
diff --git a/src/backends/backend.js b/src/backends/backend.js
index 63ac5e5dc5ed..6545432cb6bb 100644
--- a/src/backends/backend.js
+++ b/src/backends/backend.js
@@ -11,7 +11,6 @@ import {
 } from "Reducers/collections";
 import { createEntry } from "ValueObjects/Entry";
 import { sanitizeSlug } from "Lib/urlHelper";
-import diacritics from 'diacritics';
 import TestRepoBackend from "./test-repo/implementation";
 import GitHubBackend from "./github/implementation";
 import GitGatewayBackend from "./git-gateway/implementation";
@@ -80,11 +79,6 @@ const slugFormatter = (template = "{{slug}}", entryData, slugType) => {
   // Replace periods with dashes.
   .replace(/[.]/g, '-');
 
-  if (slugType === "latin") {
-    const latinSlug = diacritics.remove(slug);
-    return sanitizeSlug(latinSlug, { slugType: "ascii" });
-  }
-
   return sanitizeSlug(slug, { slugType });
 };
 
diff --git a/src/lib/urlHelper.js b/src/lib/urlHelper.js
index fd41c9a90cdb..a13d555f6e5d 100644
--- a/src/lib/urlHelper.js
+++ b/src/lib/urlHelper.js
@@ -1,4 +1,5 @@
 import url from 'url';
+import diacritics from 'diacritics';
 import sanitizeFilename from 'sanitize-filename';
 import { isString, escapeRegExp, flow, partialRight } from 'lodash';
 
@@ -61,12 +62,23 @@ export function sanitizeURI(str, { replacement = "", type = "iri" } = {}) {
 export function sanitizeSlug(str, { replacement = '-', slugType } = {}) {
   if (!isString(str)) throw "The input slug must be a string.";
   if (!isString(replacement)) throw "`options.replacement` must be a string.";
-  
+
   // Sanitize as URI and as filename.
-  const sanitize = flow([
+  let sanitize = flow([
     partialRight(sanitizeURI, { replacement, type: slugType }),
     partialRight(sanitizeFilename, { replacement }),
   ]);
+
+  // For `latin` slug type, strip diacritics and use ASCII URL.
+  if (slugType === "latin") {
+    sanitize = flow([
+      diacritics.remove,
+      partialRight(sanitizeURI, { replacement, type: 'ascii' }),
+      partialRight(sanitizeFilename, { replacement }),
+    ]);
+  }
+  
+  // Run sanitizers.
   const sanitizedSlug = sanitize(str);
   
   // Remove any doubled or trailing replacement characters (that were added in the sanitizers).