diff --git a/osu.Game/Beatmaps/Formats/OsuLegacyDecoder.cs b/osu.Game/Beatmaps/Formats/OsuLegacyDecoder.cs
index 4c540fa8cf..e1e1e40f37 100644
--- a/osu.Game/Beatmaps/Formats/OsuLegacyDecoder.cs
+++ b/osu.Game/Beatmaps/Formats/OsuLegacyDecoder.cs
@@ -456,6 +456,11 @@ protected override void ParseFile(StreamReader stream, Beatmap beatmap)
                         handleColours(beatmap, line, ref hasCustomColours);
                         break;
                     case Section.HitObjects:
+
+                        // If the ruleset wasn't specified, assume the osu!standard ruleset.
+                        if(parser == null)
+                            parser = new Rulesets.Objects.Legacy.Osu.ConvertHitObjectParser();
+
                         var obj = parser.Parse(line);
 
                         if (obj != null)