diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/membercache.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/membercache.cs
index 6cfef4b32..0c601f597 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/membercache.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/membercache.cs
@@ -1316,7 +1316,7 @@ static MemberCore GetLaterDefinedMember (MemberSpec a, MemberSpec b)
 			if (a.DeclaringType.MemberDefinition != b.DeclaringType.MemberDefinition)
 				return mc_b;
 
-			if (mc_a.Location.File != mc_a.Location.File)
+			if (mc_a.Location.File != mc_b.Location.File)
 				return mc_b;
 
 			return mc_b.Location.Row > mc_a.Location.Row ? mc_b : mc_a;