diff --git a/source/text.tex b/source/text.tex
index c39c541c69..edb73a192d 100644
--- a/source/text.tex
+++ b/source/text.tex
@@ -4276,7 +4276,7 @@
 \end{footnote}
 \begin{codeblock}
 for (int i = 0; i < n; ++i)
-  buf2[i] = src[find(atoms, atoms+sizeof(src), buf1[i]) - atoms];
+  buf2[i] = src[find(atoms, atoms + sizeof(src), buf1[i]) - atoms];
 buf2[n] = 0;
 sscanf(buf2, "%Lf", &units);
 \end{codeblock}