diff --git a/firefox-ios/Shared/Extensions/URLExtensions.swift b/firefox-ios/Shared/Extensions/URLExtensions.swift
index 5aab3983a09c..4f3be6ad2116 100644
--- a/firefox-ios/Shared/Extensions/URLExtensions.swift
+++ b/firefox-ios/Shared/Extensions/URLExtensions.swift
@@ -26,6 +26,7 @@ private let permanentURISchemes = [
     "dav",
     "dict",
     "dns",
+    "doi",
     "dtn",
     "example",
     "file",