diff --git a/book/float/chapter.tex b/book/float/chapter.tex
index f0c277b..4844a23 100644
--- a/book/float/chapter.tex
+++ b/book/float/chapter.tex
@@ -1,5 +1,5 @@
 \chapter{Floating Point Numbers}
-\label{chapter:NumberSystems}
+\label{chapter:floatingpoint}
 
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