diff --git a/wxPython/src/helpers.cpp b/wxPython/src/helpers.cpp
index e317a426be..a88ea2ae68 100644
--- a/wxPython/src/helpers.cpp
+++ b/wxPython/src/helpers.cpp
@@ -889,7 +889,6 @@ size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
     else
         m_lasterror = wxSTREAM_READ_ERROR;
     wxPyEndBlockThreads();
-    m_lastcount = o;
     return o;
 }