diff --git a/api-design-principles-from-qt/README.md b/api-design-principles-from-qt/README.md
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--- a/api-design-principles-from-qt/README.md
+++ b/api-design-principles-from-qt/README.md
@@ -15,6 +15,8 @@
 
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+<img src="api-design.jpg" width="40%" align="right" />
+
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