diff --git a/dom/jsurl/nsJSProtocolHandler.cpp b/dom/jsurl/nsJSProtocolHandler.cpp
index 6f5b3688e2e..e024f4c5331 100644
--- a/dom/jsurl/nsJSProtocolHandler.cpp
+++ b/dom/jsurl/nsJSProtocolHandler.cpp
@@ -565,15 +565,6 @@ nsJSChannel::Open2(nsIInputStream** aStream)
 NS_IMETHODIMP
 nsJSChannel::AsyncOpen(nsIStreamListener *aListener, nsISupports *aContext)
 {
-#ifdef DEBUG
-    {
-    nsCOMPtr<nsILoadInfo> loadInfo = nsIChannel::GetLoadInfo();
-    MOZ_ASSERT(!loadInfo || loadInfo->GetSecurityMode() == 0 ||
-               loadInfo->GetInitialSecurityCheckDone(),
-               "security flags in loadInfo but asyncOpen2() not called");
-    }
-#endif
-
     NS_ENSURE_ARG(aListener);
 
     // First make sure that we have a usable inner window; we'll want to make
diff --git a/image/decoders/icon/mac/nsIconChannelCocoa.mm b/image/decoders/icon/mac/nsIconChannelCocoa.mm
index c65effe7eb2..77e0c31bb02 100644
--- a/image/decoders/icon/mac/nsIconChannelCocoa.mm
+++ b/image/decoders/icon/mac/nsIconChannelCocoa.mm
@@ -225,10 +225,6 @@ NS_IMETHODIMP
 nsIconChannel::AsyncOpen(nsIStreamListener* aListener,
                                        nsISupports* ctxt)
 {
-  MOZ_ASSERT(!mLoadInfo || mLoadInfo->GetSecurityMode() == 0 ||
-             mLoadInfo->GetInitialSecurityCheckDone(),
-             "security flags in loadInfo but asyncOpen2() not called");
-
   nsCOMPtr<nsIInputStream> inStream;
   nsresult rv = MakeInputStream(getter_AddRefs(inStream), true);
   NS_ENSURE_SUCCESS(rv, rv);
diff --git a/image/decoders/icon/win/nsIconChannel.cpp b/image/decoders/icon/win/nsIconChannel.cpp
index 367d46beae4..f180aa73b4e 100644
--- a/image/decoders/icon/win/nsIconChannel.cpp
+++ b/image/decoders/icon/win/nsIconChannel.cpp
@@ -239,10 +239,6 @@ NS_IMETHODIMP
 nsIconChannel::AsyncOpen(nsIStreamListener* aListener,
                                        nsISupports* ctxt)
 {
-  MOZ_ASSERT(!mLoadInfo || mLoadInfo->GetSecurityMode() == 0 ||
-             mLoadInfo->GetInitialSecurityCheckDone(),
-             "security flags in loadInfo but asyncOpen2() not called");
-
   nsCOMPtr<nsIInputStream> inStream;
   nsresult rv = MakeInputStream(getter_AddRefs(inStream), true);
   if (NS_FAILED(rv)) {
diff --git a/modules/libjar/nsJARChannel.cpp b/modules/libjar/nsJARChannel.cpp
index 3a027ca3a6d..eeffff82eb6 100644
--- a/modules/libjar/nsJARChannel.cpp
+++ b/modules/libjar/nsJARChannel.cpp
@@ -933,10 +933,6 @@ nsJARChannel::OverrideWithSynthesizedResponse(nsIInputStream* aSynthesizedInput,
 NS_IMETHODIMP
 nsJARChannel::AsyncOpen(nsIStreamListener *listener, nsISupports *ctx)
 {
-    MOZ_ASSERT(!mLoadInfo || mLoadInfo->GetSecurityMode() == 0 ||
-               mLoadInfo->GetEnforceSecurity(),
-               "security flags in loadInfo but asyncOpen2() not called");
-
     LOG(("nsJARChannel::AsyncOpen [this=%x]\n", this));
 
     NS_ENSURE_ARG_POINTER(listener);
diff --git a/netwerk/base/nsBaseChannel.cpp b/netwerk/base/nsBaseChannel.cpp
index 8568b5f968a..cde055f4be0 100644
--- a/netwerk/base/nsBaseChannel.cpp
+++ b/netwerk/base/nsBaseChannel.cpp
@@ -626,10 +626,6 @@ nsBaseChannel::Open2(nsIInputStream** aStream)
 NS_IMETHODIMP
 nsBaseChannel::AsyncOpen(nsIStreamListener *listener, nsISupports *ctxt)
 {
-  MOZ_ASSERT(!mLoadInfo || mLoadInfo->GetSecurityMode() == 0 ||
-             mLoadInfo->GetInitialSecurityCheckDone(),
-             "security flags in loadInfo but asyncOpen2() not called");
-
   NS_ENSURE_TRUE(mURI, NS_ERROR_NOT_INITIALIZED);
   NS_ENSURE_TRUE(!mPump, NS_ERROR_IN_PROGRESS);
   NS_ENSURE_TRUE(!mWasOpened, NS_ERROR_ALREADY_OPENED);
diff --git a/netwerk/protocol/app/AppProtocolHandler.cpp b/netwerk/protocol/app/AppProtocolHandler.cpp
index 48f892b1a0e..94b41ae5d86 100644
--- a/netwerk/protocol/app/AppProtocolHandler.cpp
+++ b/netwerk/protocol/app/AppProtocolHandler.cpp
@@ -111,10 +111,6 @@ DummyChannel::Open2(nsIInputStream** aStream)
 
 NS_IMETHODIMP DummyChannel::AsyncOpen(nsIStreamListener* aListener, nsISupports* aContext)
 {
-  MOZ_ASSERT(!mLoadInfo || mLoadInfo->GetSecurityMode() == 0 ||
-             mLoadInfo->GetInitialSecurityCheckDone(),
-             "security flags in loadInfo but asyncOpen2() not called");
-
   mListener = aListener;
   mListenerContext = aContext;
   mPending = true;
diff --git a/netwerk/protocol/http/HttpChannelChild.cpp b/netwerk/protocol/http/HttpChannelChild.cpp
index 17a23965014..4ab6c4a42da 100644
--- a/netwerk/protocol/http/HttpChannelChild.cpp
+++ b/netwerk/protocol/http/HttpChannelChild.cpp
@@ -1488,10 +1488,6 @@ HttpChannelChild::GetSecurityInfo(nsISupports **aSecurityInfo)
 NS_IMETHODIMP
 HttpChannelChild::AsyncOpen(nsIStreamListener *listener, nsISupports *aContext)
 {
-  MOZ_ASSERT(!mLoadInfo || mLoadInfo->GetSecurityMode() == 0 ||
-             mLoadInfo->GetInitialSecurityCheckDone(),
-             "security flags in loadInfo but asyncOpen2() not called");
-
   LOG(("HttpChannelChild::AsyncOpen [this=%p uri=%s]\n", this, mSpec.get()));
 
   if (mCanceled)
diff --git a/netwerk/protocol/http/nsHttpChannel.cpp b/netwerk/protocol/http/nsHttpChannel.cpp
index 0f011e49c64..79ceb97d9c8 100644
--- a/netwerk/protocol/http/nsHttpChannel.cpp
+++ b/netwerk/protocol/http/nsHttpChannel.cpp
@@ -4953,10 +4953,6 @@ nsHttpChannel::GetSecurityInfo(nsISupports **securityInfo)
 NS_IMETHODIMP
 nsHttpChannel::AsyncOpen(nsIStreamListener *listener, nsISupports *context)
 {
-    MOZ_ASSERT(!mLoadInfo || mLoadInfo->GetSecurityMode() == 0 ||
-               mLoadInfo->GetInitialSecurityCheckDone(),
-               "security flags in loadInfo but asyncOpen2() not called");
-
     LOG(("nsHttpChannel::AsyncOpen [this=%p]\n", this));
 
     NS_ENSURE_ARG_POINTER(listener);
diff --git a/netwerk/protocol/rtsp/RtspChannelChild.cpp b/netwerk/protocol/rtsp/RtspChannelChild.cpp
index f6c8f7904ef..08e7d58975c 100644
--- a/netwerk/protocol/rtsp/RtspChannelChild.cpp
+++ b/netwerk/protocol/rtsp/RtspChannelChild.cpp
@@ -107,10 +107,6 @@ private:
 NS_IMETHODIMP
 RtspChannelChild::AsyncOpen(nsIStreamListener *aListener, nsISupports *aContext)
 {
-  MOZ_ASSERT(!mLoadInfo || mLoadInfo->GetSecurityMode() == 0 ||
-             mLoadInfo->GetInitialSecurityCheckDone(),
-             "security flags in loadInfo but asyncOpen2() not called");
-
   // Precondition checks.
   MOZ_ASSERT(aListener);
   nsCOMPtr<nsIURI> uri = nsBaseChannel::URI();
diff --git a/netwerk/protocol/viewsource/nsViewSourceChannel.cpp b/netwerk/protocol/viewsource/nsViewSourceChannel.cpp
index 8824e9b1215..1edb63c54e2 100644
--- a/netwerk/protocol/viewsource/nsViewSourceChannel.cpp
+++ b/netwerk/protocol/viewsource/nsViewSourceChannel.cpp
@@ -258,15 +258,6 @@ nsViewSourceChannel::Open2(nsIInputStream** aStream)
 NS_IMETHODIMP
 nsViewSourceChannel::AsyncOpen(nsIStreamListener *aListener, nsISupports *ctxt)
 {
-#ifdef DEBUG
-    {
-    nsCOMPtr<nsILoadInfo> loadInfo = mChannel->GetLoadInfo();
-    MOZ_ASSERT(!loadInfo || loadInfo->GetSecurityMode() == 0 ||
-               loadInfo->GetEnforceSecurity(),
-               "security flags in loadInfo but asyncOpen2() not called");
-    }
-#endif
-
     NS_ENSURE_TRUE(mChannel, NS_ERROR_FAILURE);
 
     mListener = aListener;
diff --git a/netwerk/protocol/wyciwyg/WyciwygChannelChild.cpp b/netwerk/protocol/wyciwyg/WyciwygChannelChild.cpp
index ca16a2779fa..f041c11dbcd 100644
--- a/netwerk/protocol/wyciwyg/WyciwygChannelChild.cpp
+++ b/netwerk/protocol/wyciwyg/WyciwygChannelChild.cpp
@@ -626,10 +626,6 @@ GetTabChild(nsIChannel* aChannel)
 NS_IMETHODIMP
 WyciwygChannelChild::AsyncOpen(nsIStreamListener *aListener, nsISupports *aContext)
 {
-  MOZ_ASSERT(!mLoadInfo || mLoadInfo->GetSecurityMode() == 0 ||
-             mLoadInfo->GetInitialSecurityCheckDone(),
-             "security flags in loadInfo but asyncOpen2() not called");
-
   LOG(("WyciwygChannelChild::AsyncOpen [this=%p]\n", this));
 
   // The only places creating wyciwyg: channels should be
diff --git a/netwerk/protocol/wyciwyg/nsWyciwygChannel.cpp b/netwerk/protocol/wyciwyg/nsWyciwygChannel.cpp
index 51d838d870f..0e27a1397e6 100644
--- a/netwerk/protocol/wyciwyg/nsWyciwygChannel.cpp
+++ b/netwerk/protocol/wyciwyg/nsWyciwygChannel.cpp
@@ -431,10 +431,6 @@ nsWyciwygChannel::Open2(nsIInputStream** aStream)
 NS_IMETHODIMP
 nsWyciwygChannel::AsyncOpen(nsIStreamListener *listener, nsISupports *ctx)
 {
-  MOZ_ASSERT(!mLoadInfo || mLoadInfo->GetSecurityMode() == 0 ||
-             mLoadInfo->GetInitialSecurityCheckDone(),
-             "security flags in loadInfo but asyncOpen2() not called");
-
   LOG(("nsWyciwygChannel::AsyncOpen [this=%p]\n", this));
   MOZ_ASSERT(mMode == NONE, "nsWyciwygChannel already open");
 
diff --git a/uriloader/exthandler/nsExternalProtocolHandler.cpp b/uriloader/exthandler/nsExternalProtocolHandler.cpp
index 0143c176e89..08ef7bf47a8 100644
--- a/uriloader/exthandler/nsExternalProtocolHandler.cpp
+++ b/uriloader/exthandler/nsExternalProtocolHandler.cpp
@@ -186,10 +186,6 @@ NS_IMETHODIMP nsExtProtocolChannel::Open2(nsIInputStream** aStream)
 
 NS_IMETHODIMP nsExtProtocolChannel::AsyncOpen(nsIStreamListener *listener, nsISupports *ctxt)
 {
-  MOZ_ASSERT(!mLoadInfo || mLoadInfo->GetSecurityMode() == 0 ||
-             mLoadInfo->GetInitialSecurityCheckDone(),
-             "security flags in loadInfo but asyncOpen2() not called");
-
   NS_ENSURE_ARG_POINTER(listener);
   NS_ENSURE_TRUE(!mWasOpened, NS_ERROR_ALREADY_OPENED);