diff --git a/dom/file/ipc/RemoteLazyInputStream.cpp b/dom/file/ipc/RemoteLazyInputStream.cpp
index 936438df132f..51b33d9da2d1 100644
--- a/dom/file/ipc/RemoteLazyInputStream.cpp
+++ b/dom/file/ipc/RemoteLazyInputStream.cpp
@@ -932,7 +932,7 @@ void RemoteLazyInputStream::SerializedComplexity(uint32_t aMaxSize,
 void RemoteLazyInputStream::Serialize(mozilla::ipc::InputStreamParams& aParams,
                                       uint32_t aMaxSize, uint32_t* aSizeUsed) {
   *aSizeUsed = 0;
-  aParams = mozilla::ipc::RemoteLazyInputStreamParams(this);
+  aParams = mozilla::ipc::RemoteLazyInputStreamParams(WrapNotNull(this));
 }
 
 bool RemoteLazyInputStream::Deserialize(
diff --git a/ipc/glue/DataPipe.cpp b/ipc/glue/DataPipe.cpp
index 55e38ddd67b9..650dd5d1ca2b 100644
--- a/ipc/glue/DataPipe.cpp
+++ b/ipc/glue/DataPipe.cpp
@@ -679,7 +679,7 @@ void DataPipeReceiver::SerializedComplexity(uint32_t aMaxSize,
 void DataPipeReceiver::Serialize(InputStreamParams& aParams, uint32_t aMaxSize,
                                  uint32_t* aSizeUsed) {
   *aSizeUsed = 0;
-  aParams = DataPipeReceiverStreamParams(this);
+  aParams = DataPipeReceiverStreamParams(WrapNotNull(this));
 }
 
 bool DataPipeReceiver::Deserialize(const InputStreamParams& aParams) {
diff --git a/ipc/glue/IPCStreamUtils.cpp b/ipc/glue/IPCStreamUtils.cpp
index 265cb1cff8d3..b884bf5d5d0f 100644
--- a/ipc/glue/IPCStreamUtils.cpp
+++ b/ipc/glue/IPCStreamUtils.cpp
@@ -90,7 +90,7 @@ static bool SerializeLazyInputStream(nsIInputStream* aStream,
     return false;
   }
 
-  aValue.stream() = RemoteLazyInputStreamParams(lazyStream);
+  aValue.stream() = RemoteLazyInputStreamParams(WrapNotNull(lazyStream));
 
   return true;
 }
diff --git a/ipc/glue/InputStreamParams.ipdlh b/ipc/glue/InputStreamParams.ipdlh
index 8d1f727ecab8..2491c477af06 100644
--- a/ipc/glue/InputStreamParams.ipdlh
+++ b/ipc/glue/InputStreamParams.ipdlh
@@ -48,12 +48,12 @@ struct SlicedInputStreamParams
 
 struct RemoteLazyInputStreamParams
 {
-  nullable RemoteLazyInputStream stream;
+  RemoteLazyInputStream stream;
 };
 
 struct DataPipeReceiverStreamParams
 {
-  nullable DataPipeReceiver pipe;
+  DataPipeReceiver pipe;
 };
 
 union InputStreamParams
diff --git a/ipc/glue/InputStreamUtils.cpp b/ipc/glue/InputStreamUtils.cpp
index 888afce859ee..039582c94aa2 100644
--- a/ipc/glue/InputStreamUtils.cpp
+++ b/ipc/glue/InputStreamUtils.cpp
@@ -108,7 +108,7 @@ void InputStreamHelper::SerializeInputStreamAsPipe(nsIInputStream* aInputStream,
     return;
   }
 
-  aParams = DataPipeReceiverStreamParams(receiver);
+  aParams = DataPipeReceiverStreamParams(WrapNotNull(receiver));
   if (length != -1) {
     aParams = InputStreamLengthWrapperParams(aParams, length, false);
   }
@@ -130,13 +130,13 @@ already_AddRefed<nsIInputStream> InputStreamHelper::DeserializeInputStream(
             params.stream()->TakeInternalStream(getter_AddRefs(innerStream)))) {
       return innerStream.forget();
     }
-    return do_AddRef(params.stream());
+    return do_AddRef(params.stream().get());
   }
 
   if (aParams.type() == InputStreamParams::TDataPipeReceiverStreamParams) {
     const DataPipeReceiverStreamParams& pipeParams =
         aParams.get_DataPipeReceiverStreamParams();
-    return do_AddRef(pipeParams.pipe());
+    return do_AddRef(pipeParams.pipe().get());
   }
 
   nsCOMPtr<nsIIPCSerializableInputStream> serializable;