diff --git a/src/IKVM.OpenJDK.Tests/jdk/ExcludeList.txt b/src/IKVM.OpenJDK.Tests/jdk/ExcludeList.txt
index 4a625af37e..4588743322 100644
--- a/src/IKVM.OpenJDK.Tests/jdk/ExcludeList.txt
+++ b/src/IKVM.OpenJDK.Tests/jdk/ExcludeList.txt
@@ -3229,11 +3229,6 @@ sun/net/sdp/sanity.sh
 sun/net/www/protocol/http/RetryUponTimeout.java                                                                         linux-all
 sun/nio/cs/TestCompoundTest.java                                                                                        linux-all
 
-# this is broken on .NET Core 3.1, but seems to work on .NET 6
-sun/nio/cs/FindOneCharEncoderBugs.java                                                                                  linux-all
-sun/nio/cs/DecoderOverflow.java                                                                                         linux-all
-sun/nio/cs/EncodingNothing.java                                                                                         linux-all
-
 sun/nio/ch/SelProvider.java                                                                                             linux-all,macosx-all
 
 sun/rmi/rmic/extraCompilation/run.sh                                                                                    linux-all