diff --git a/src/building/stages.png b/src/building/stages.png
index 49b18efe0..75042f4a7 100644
Binary files a/src/building/stages.png and b/src/building/stages.png differ
diff --git a/src/building/stages.tex b/src/building/stages.tex
index 5483c2cb4..81cc742e4 100644
--- a/src/building/stages.tex
+++ b/src/building/stages.tex
@@ -14,7 +14,7 @@
 Rows are things that can be used together to build a program.
 \\
 
-\noindent \verb|./x.py build --stage N| builds programs in \emph{column} \verb|N| (except rustdoc - it builds rustdoc from column \verb|N + 1|).\\
+\noindent \verb|./x.py build --stage N| builds programs in \emph{column} \verb|N| (except rustdoc - it builds rustdoc from column \verb|N - 1|).\\
 \noindent \verb|./x.py test --stage N| builds and tests everything in \emph{row} \verb|N|.\\
 \noindent \verb|./x.py doc --stage N| generates docs with rustdoc from \emph{row} \verb|N|.\\
 };