diff --git a/Shared/ArticleStyles/ArticleThemeDownloader.swift b/Shared/ArticleStyles/ArticleThemeDownloader.swift
index d6714e169..18c3e6980 100644
--- a/Shared/ArticleStyles/ArticleThemeDownloader.swift
+++ b/Shared/ArticleStyles/ArticleThemeDownloader.swift
@@ -75,6 +75,10 @@ public class ArticleThemeDownloader {
 	private func findThemeFile(in searchPath: String) -> String? {
 		if let directoryContents = FileManager.default.enumerator(atPath: searchPath) {
 			while let file = directoryContents.nextObject() as? String {
+				if file.localizedCaseInsensitiveContains("__MACOSX") {
+					logger.debug("Ignoring theme file in __MACOSX folder.")
+					continue
+				}
 				if file.hasSuffix(".nnwtheme") {
 					return file
 				}