diff --git a/osu.Game.Tests/Visual/Online/TestSceneWikiMarkdownContainer.cs b/osu.Game.Tests/Visual/Online/TestSceneWikiMarkdownContainer.cs
index 31a866b8f5..863b352618 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneWikiMarkdownContainer.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneWikiMarkdownContainer.cs
@@ -195,7 +195,7 @@ Line after image";
             AddStep("Add flag", () =>
             {
                 markdownContainer.CurrentPath = @"https://dev.ppy.sh";
-                markdownContainer.Text = "::{flag=\"AU\"}::";
+                markdownContainer.Text = "::{flag=\"AU\"}:: ::{flag=\"ZZ\"}::";
             });
         }
 
diff --git a/osu.Game/Graphics/Containers/Markdown/OsuMarkdownTextFlowContainer.cs b/osu.Game/Graphics/Containers/Markdown/OsuMarkdownTextFlowContainer.cs
index fb8f13ab84..9d7b47281f 100644
--- a/osu.Game/Graphics/Containers/Markdown/OsuMarkdownTextFlowContainer.cs
+++ b/osu.Game/Graphics/Containers/Markdown/OsuMarkdownTextFlowContainer.cs
@@ -57,7 +57,11 @@ namespace osu.Game.Graphics.Containers.Markdown
             }
 
             string flag = flagAttribute.Split('=').Last().Trim('"');
-            AddDrawable(new DrawableFlag(Enum.Parse<CountryCode>(flag)) { Size = new Vector2(20, 15) });
+
+            if (!Enum.TryParse<CountryCode>(flag, out var countryCode))
+                countryCode = CountryCode.Unknown;
+
+            AddDrawable(new DrawableFlag(countryCode) { Size = new Vector2(20, 15) });
         }
 
         private class OsuMarkdownInlineCode : Container