diff --git a/netwerk/protocol/http/nsHttpConnection.cpp b/netwerk/protocol/http/nsHttpConnection.cpp
index fcbdac3a381..4a2a90905a5 100644
--- a/netwerk/protocol/http/nsHttpConnection.cpp
+++ b/netwerk/protocol/http/nsHttpConnection.cpp
@@ -293,6 +293,9 @@ nsHttpConnection::Activate(nsAHttpTransaction *trans, PRUint8 caps, PRInt32 pri)
     // Clear the per activation counter
     mCurrentBytesRead = 0;
 
+    // The overflow state is not needed between activations
+    mInputOverflow = nsnull;
+
     rv = OnOutputStreamReady(mSocketOut);
     
 failed_activation: