diff --git a/src/NHibernate/Type/Int32Type.cs b/src/NHibernate/Type/Int32Type.cs
index f19fb1148f..5db8788a39 100644
--- a/src/NHibernate/Type/Int32Type.cs
+++ b/src/NHibernate/Type/Int32Type.cs
@@ -30,8 +30,10 @@ public override object Get(DbDataReader rs, int index, ISessionImplementor sessi
 		{
 			try
 			{
-				return rs[index] switch
+				var value = rs[index];
+				return value switch
 				{
+					int _ => value,
 					BigInteger bi => (int) bi,
 					var c => Convert.ToInt32(c)
 				};