diff --git a/conformance/failure_list_csharp.txt b/conformance/failure_list_csharp.txt
index 2adb30f576da7..2a20aa78e7ff4 100644
--- a/conformance/failure_list_csharp.txt
+++ b/conformance/failure_list_csharp.txt
@@ -1,33 +1,2 @@
-Recommended.Proto2.ProtobufInput.ValidDataRepeated.BOOL.PackedInput.PackedOutput.ProtobufOutput
-Recommended.Proto2.ProtobufInput.ValidDataRepeated.BOOL.PackedInput.UnpackedOutput.ProtobufOutput
-Recommended.Proto2.ProtobufInput.ValidDataRepeated.BOOL.UnpackedInput.DefaultOutput.ProtobufOutput
-Recommended.Proto2.ProtobufInput.ValidDataRepeated.BOOL.UnpackedInput.PackedOutput.ProtobufOutput
-Recommended.Proto2.ProtobufInput.ValidDataRepeated.BOOL.UnpackedInput.UnpackedOutput.ProtobufOutput
-Recommended.Proto2.ProtobufInput.ValidDataScalarBinary.BOOL[4].ProtobufOutput
-Recommended.Proto2.ProtobufInput.ValidDataScalarBinary.BOOL[6].ProtobufOutput
-Recommended.Proto3.ProtobufInput.ValidDataRepeated.BOOL.PackedInput.DefaultOutput.ProtobufOutput
-Recommended.Proto3.ProtobufInput.ValidDataRepeated.BOOL.PackedInput.PackedOutput.ProtobufOutput
-Recommended.Proto3.ProtobufInput.ValidDataRepeated.BOOL.PackedInput.UnpackedOutput.ProtobufOutput
-Recommended.Proto3.ProtobufInput.ValidDataRepeated.BOOL.UnpackedInput.DefaultOutput.ProtobufOutput
-Recommended.Proto3.ProtobufInput.ValidDataRepeated.BOOL.UnpackedInput.PackedOutput.ProtobufOutput
-Recommended.Proto3.ProtobufInput.ValidDataRepeated.BOOL.UnpackedInput.UnpackedOutput.ProtobufOutput
-Recommended.Proto3.ProtobufInput.ValidDataScalarBinary.BOOL[4].ProtobufOutput
-Recommended.Proto3.ProtobufInput.ValidDataScalarBinary.BOOL[6].ProtobufOutput
-Required.Proto2.ProtobufInput.RepeatedScalarSelectsLast.BOOL.ProtobufOutput
-Required.Proto2.ProtobufInput.ValidDataRepeated.BOOL.PackedInput.ProtobufOutput
-Required.Proto2.ProtobufInput.ValidDataRepeated.BOOL.UnpackedInput.ProtobufOutput
-Required.Proto2.ProtobufInput.ValidDataScalar.BOOL[4].ProtobufOutput
-Required.Proto2.ProtobufInput.ValidDataScalar.BOOL[6].ProtobufOutput
-Required.Proto3.ProtobufInput.RepeatedScalarSelectsLast.BOOL.JsonOutput
-Required.Proto3.ProtobufInput.RepeatedScalarSelectsLast.BOOL.ProtobufOutput
-Required.Proto3.ProtobufInput.ValidDataRepeated.BOOL.PackedInput.JsonOutput
-Required.Proto3.ProtobufInput.ValidDataRepeated.BOOL.PackedInput.ProtobufOutput
-Required.Proto3.ProtobufInput.ValidDataRepeated.BOOL.UnpackedInput.JsonOutput
-Required.Proto3.ProtobufInput.ValidDataRepeated.BOOL.UnpackedInput.ProtobufOutput
-Required.Proto3.ProtobufInput.ValidDataScalar.BOOL[4].JsonOutput
-Required.Proto3.ProtobufInput.ValidDataScalar.BOOL[4].ProtobufOutput
-Required.Proto3.ProtobufInput.ValidDataScalar.BOOL[6].JsonOutput
-Required.Proto3.ProtobufInput.ValidDataScalar.BOOL[6].ProtobufOutput
-Recommended.Proto2.ProtobufInput.ValidDataRepeated.BOOL.PackedInput.DefaultOutput.ProtobufOutput
 Recommended.Proto3.JsonInput.BytesFieldBase64Url.JsonOutput
 Recommended.Proto3.JsonInput.BytesFieldBase64Url.ProtobufOutput
diff --git a/csharp/src/Google.Protobuf.Conformance/Program.cs b/csharp/src/Google.Protobuf.Conformance/Program.cs
index 728a3b9682386..d1093abee1f3b 100644
--- a/csharp/src/Google.Protobuf.Conformance/Program.cs
+++ b/csharp/src/Google.Protobuf.Conformance/Program.cs
@@ -143,7 +143,7 @@ private static ConformanceResponse PerformRequest(ConformanceRequest request, Ty
                     case global::Conformance.WireFormat.Protobuf:
                         return new ConformanceResponse { ProtobufPayload = message.ToByteString() };
                     default:
-                        throw new Exception("Unsupported request output format: " + request.PayloadCase);
+                        throw new Exception("Unsupported request output format: " + request.RequestedOutputFormat);
                 }
             }
             catch (InvalidOperationException e)
diff --git a/csharp/src/Google.Protobuf/CodedInputStream.cs b/csharp/src/Google.Protobuf/CodedInputStream.cs
index 44934f341b253..bea6bff34f2bf 100644
--- a/csharp/src/Google.Protobuf/CodedInputStream.cs
+++ b/csharp/src/Google.Protobuf/CodedInputStream.cs
@@ -577,7 +577,7 @@ public uint ReadFixed32()
         /// </summary>
         public bool ReadBool()
         {
-            return ReadRawVarint32() != 0;
+            return ReadRawVarint64() != 0;
         }
 
         /// <summary>
@@ -845,7 +845,7 @@ public bool MaybeConsumeTag(uint tag)
 
         internal static bool? ReadBoolWrapper(CodedInputStream input)
         {
-            return ReadUInt32Wrapper(input) != 0;
+            return ReadUInt64Wrapper(input) != 0;
         }
 
         internal static uint? ReadUInt32Wrapper(CodedInputStream input)
@@ -1654,4 +1654,4 @@ private void SkipImpl(int amountToSkip)
         }
 #endregion
     }
-}
\ No newline at end of file
+}