diff --git a/include/wx/richtext/richtextbuffer.h b/include/wx/richtext/richtextbuffer.h
index 37e254b0e4..5188c95a6f 100644
--- a/include/wx/richtext/richtextbuffer.h
+++ b/include/wx/richtext/richtextbuffer.h
@@ -1067,7 +1067,7 @@ public:
     virtual int GetParagraphLength(long paragraphNumber) const;
 
     /// Get the number of paragraphs
-    virtual int GetParagraphCount() const { return GetChildCount(); }
+    virtual int GetParagraphCount() const { return wx_static_cast(int, GetChildCount()); }
 
     /// Get the number of visible lines
     virtual int GetLineCount() const;