diff --git a/Doc/lib/libsocket.tex b/Doc/lib/libsocket.tex
index f20c56c..5ba4310 100644
--- a/Doc/lib/libsocket.tex
+++ b/Doc/lib/libsocket.tex
@@ -331,25 +331,25 @@
 \end{funcdesc}
 
 \begin{funcdesc}{ntohl}{x}
-Convert 32-bit integers from network to host byte order.  On machines
+Convert 32-bit positive integers from network to host byte order.  On machines
 where the host byte order is the same as network byte order, this is a
 no-op; otherwise, it performs a 4-byte swap operation.
 \end{funcdesc}
 
 \begin{funcdesc}{ntohs}{x}
-Convert 16-bit integers from network to host byte order.  On machines
+Convert 16-bit positive integers from network to host byte order.  On machines
 where the host byte order is the same as network byte order, this is a
 no-op; otherwise, it performs a 2-byte swap operation.
 \end{funcdesc}
 
 \begin{funcdesc}{htonl}{x}
-Convert 32-bit integers from host to network byte order.  On machines
+Convert 32-bit positive integers from host to network byte order.  On machines
 where the host byte order is the same as network byte order, this is a
 no-op; otherwise, it performs a 4-byte swap operation.
 \end{funcdesc}
 
 \begin{funcdesc}{htons}{x}
-Convert 16-bit integers from host to network byte order.  On machines
+Convert 16-bit positive integers from host to network byte order.  On machines
 where the host byte order is the same as network byte order, this is a
 no-op; otherwise, it performs a 2-byte swap operation.
 \end{funcdesc}