diff --git a/gpl-lgpl.tex b/gpl-lgpl.tex
index 49944b0..98a686f 100644
--- a/gpl-lgpl.tex
+++ b/gpl-lgpl.tex
@@ -899,7 +899,7 @@ these licenses do admittedly look and read more like legislation as a result.
 Nevertheless, all of the ``v3'' group are substantially better and improved
 licenses.
 
-GPLv3 and its terms are discussed in detail in Chapter\~ref{GPLv3}.
+GPLv3 and its terms are discussed in detail in Chapter~\ref{GPLv3}.
 
 \section{The Innovation of Optional ``Or Any Later'' Version}
 
@@ -2239,7 +2239,7 @@ visit \url{http://gplv3.fsf.org/}.
 \section{Understanding GPLv3 As An Upgraded GPLv2}
 
 Ultimately, GPLv2 and GPLv3 co-exist as active licenses in regular use.  As
-discussed in Chapter\~ref{tale-of-two-copylefts}, GPLv1 was never regularly
+discussed in Chapter~\ref{tale-of-two-copylefts}, GPLv1 was never regularly
 used alongside GPLv2.  However, given GPLv2's widespread popularity and
 existing longevity by the time GPLv3 was published, it is not surprising that
 some licensors still prefer GPLv2-only or GPLv2-or-later.  GPLv3 gained major
@@ -2591,7 +2591,7 @@ holder.  Usually, sublicensing is regarded as a practical convenience or
 necessity for the licensee, to avoid having to negotiate a license with each
 licensor in a chain of distribution.  The GPL solves this problem in another
 way --- through its automatic licensing provision found in GPLv3~\S10 (which
-is discussed in more detail in \S\~ref{GPLv3s10} of this tutorial).
+is discussed in more detail in \S~\ref{GPLv3s10} of this tutorial).
 
 \section{GPLv3's views on DRM and Device Lock-Down}
 \label{GPLv3-drm}