diff --git a/slides/cse4562sp2018/2018-01-31-SQL+Physical.html b/slides/cse4562sp2018/2018-01-31-SQL+Physical.html
index f369dfc5..8bb11d91 100644
--- a/slides/cse4562sp2018/2018-01-31-SQL+Physical.html
+++ b/slides/cse4562sp2018/2018-01-31-SQL+Physical.html
@@ -371,7 +371,7 @@
         </section>
 
         <section>
-          <svg data-src="graphics/2018-01-29-db_as_mediator.svg" />
+          <svg data-src="graphics/2018-01-29-db_as_mediator.svg" class="stretch"/>
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         <section>