diff --git a/src/main/java/icu/samnyan/aqua/sega/general/filter/CompressionFilter.kt b/src/main/java/icu/samnyan/aqua/sega/general/filter/CompressionFilter.kt
index 7beb88ad..df8f3821 100644
--- a/src/main/java/icu/samnyan/aqua/sega/general/filter/CompressionFilter.kt
+++ b/src/main/java/icu/samnyan/aqua/sega/general/filter/CompressionFilter.kt
@@ -37,7 +37,7 @@ class CompressionFilter(
     }
 
     fun truncateVersion(version: Number): Number {
-        return floor(version.toFloat() / 5.0) * 5;
+        return (floor(version.toFloat() / 5.0) * 5).toInt();
     }
 
     var keys = gameData.chu3GameEncryption + gameData.mai2GameEncryption + gameData.ogkGameEncryption