--- a/doc/manual/callconvs/callconv_sparc.tex	Sun Mar 20 18:44:41 2016 +0100
+++ b/doc/manual/callconvs/callconv_sparc.tex	Mon Mar 21 01:15:37 2016 +0100
@@ -40,7 +40,7 @@
 \end{itemize}
 
 \begin{table}[h]
-\begin{tabular}{lll}
+\begin{tabular*}{0.75\textwidth}{lll}
 \hline
 Name                                 & Alias                   & Brief description\\
 \hline
@@ -50,7 +50,7 @@
 {\bf \%o1-\%o5 and \%i1-\%i5}        &                         & Output and input argument registers \\
 {\bf \%o6 and \%i6}                  &                         & Stack and frame pointer \\
 {\bf \%o7 and \%i7}                  &                         & Return address (caller writes to o7, callee uses i7) \\
-\end{tabular}
+\end{tabular*}
 \caption{Register usage on sparc calling convention}
 \end{table}