diff --git a/include/wx/richtext/richtextbuffer.h b/include/wx/richtext/richtextbuffer.h
index c32bfc8329..a88985d6e0 100644
--- a/include/wx/richtext/richtextbuffer.h
+++ b/include/wx/richtext/richtextbuffer.h
@@ -705,7 +705,7 @@ public:
     virtual int GetParagraphLength(long paragraphNumber) const;
 
     /// Get the number of paragraphs
-    virtual int GetParagraphCount() const { return GetChildCount(); }
+    virtual int GetParagraphCount() const { return static_cast<int>(GetChildCount()); }
 
     /// Get the number of visible lines
     virtual int GetLineCount() const;