diff --git a/include/wx/mstream.h b/include/wx/mstream.h
index dc8c6688d7..8c57cb0323 100644
--- a/include/wx/mstream.h
+++ b/include/wx/mstream.h
@@ -32,6 +32,8 @@ class wxMemoryInputStream: virtual public wxMemoryStreamBase, public wxInputStre
   wxMemoryInputStream(const char *data, size_t length);
   virtual ~wxMemoryInputStream();
 
+  char Peek();
+
  protected:
  
   size_t DoRead(void *buffer, size_t size);
diff --git a/src/common/mstream.cpp b/src/common/mstream.cpp
index 9e1ee174f2..7f72e82db4 100644
--- a/src/common/mstream.cpp
+++ b/src/common/mstream.cpp
@@ -75,6 +75,13 @@ wxMemoryInputStream::~wxMemoryInputStream()
 {
 }
 
+char wxMemoryInputStream::Peek()
+{
+   // wxStreamBuffer is disabled so just peek the current character.
+
+   return m_buffer[m_position_i];
+}
+
 size_t wxMemoryInputStream::DoRead(void *buffer, size_t size)
 {
   if (m_iolimit == 2) {