diff --git a/osu.Game/Beatmaps/Formats/LegacyBeatmapEncoder.cs b/osu.Game/Beatmaps/Formats/LegacyBeatmapEncoder.cs
index 139be3ce2f..d38ff482ad 100644
--- a/osu.Game/Beatmaps/Formats/LegacyBeatmapEncoder.cs
+++ b/osu.Game/Beatmaps/Formats/LegacyBeatmapEncoder.cs
@@ -332,7 +332,7 @@ private string getSampleBank(IList<HitSampleInfo> samples, bool banksOnly = fals
 
             if (!banksOnly)
             {
-                string customSampleBank = toLegacyCustomSampleBank(samples.FirstOrDefault()?.Suffix);
+                string customSampleBank = toLegacyCustomSampleBank(samples.FirstOrDefault(s => !string.IsNullOrEmpty(s.Name))?.Suffix);
                 string sampleFilename = samples.FirstOrDefault(s => string.IsNullOrEmpty(s.Name))?.LookupNames.First() ?? string.Empty;
                 int volume = samples.FirstOrDefault()?.Volume ?? 100;