diff --git a/netwerk/protocol/http/Http2Session.cpp b/netwerk/protocol/http/Http2Session.cpp
index 7183e4216a50..b0617b7e8ee2 100644
--- a/netwerk/protocol/http/Http2Session.cpp
+++ b/netwerk/protocol/http/Http2Session.cpp
@@ -896,7 +896,10 @@ Http2Session::CleanupStream(Http2Stream *aStream, nsresult aResult,
 {
   MOZ_ASSERT(PR_GetCurrentThread() == gSocketThread);
   LOG3(("Http2Session::CleanupStream %p %p 0x%X %X\n",
-        this, aStream, aStream->StreamID(), aResult));
+        this, aStream, aStream ? aStream->StreamID() : 0, aResult));
+  if (!aStream) {
+    return;
+  }
 
   Http2PushedStream *pushSource = nullptr;
 
diff --git a/netwerk/protocol/http/SpdySession3.cpp b/netwerk/protocol/http/SpdySession3.cpp
index 291e229c992b..ebcab0fe08ce 100644
--- a/netwerk/protocol/http/SpdySession3.cpp
+++ b/netwerk/protocol/http/SpdySession3.cpp
@@ -837,7 +837,10 @@ SpdySession3::CleanupStream(SpdyStream3 *aStream, nsresult aResult,
 {
   MOZ_ASSERT(PR_GetCurrentThread() == gSocketThread);
   LOG3(("SpdySession3::CleanupStream %p %p 0x%X %X\n",
-        this, aStream, aStream->StreamID(), aResult));
+        this, aStream, aStream ? aStream->StreamID() : 0, aResult));
+  if (!aStream) {
+    return;
+  }
 
   SpdyPushedStream3 *pushSource = nullptr;
 
diff --git a/netwerk/protocol/http/SpdySession31.cpp b/netwerk/protocol/http/SpdySession31.cpp
index 9240d8c1d3e0..0943145e2d25 100644
--- a/netwerk/protocol/http/SpdySession31.cpp
+++ b/netwerk/protocol/http/SpdySession31.cpp
@@ -874,7 +874,10 @@ SpdySession31::CleanupStream(SpdyStream31 *aStream, nsresult aResult,
 {
   MOZ_ASSERT(PR_GetCurrentThread() == gSocketThread);
   LOG3(("SpdySession31::CleanupStream %p %p 0x%X %X\n",
-        this, aStream, aStream->StreamID(), aResult));
+        this, aStream, aStream ? aStream->StreamID() : 0, aResult));
+  if (!aStream) {
+    return;
+  }
 
   SpdyPushedStream31 *pushSource = nullptr;