diff --git a/src/include/os/sun4/osiSock.h b/src/include/os/sun4/osiSock.h
index edf2ffb30..26d74bf37 100644
--- a/src/include/os/sun4/osiSock.h
+++ b/src/include/os/sun4/osiSock.h
@@ -64,7 +64,7 @@ void ipAddrToA (const struct sockaddr_in *pInetAddr,
 	 * (__SUNPRO_CC supplies this file but g++ does not supply 
 	 * an ansi protottype)
 	 */
-	unsigned long inet_addr (char *);
+	unsigned long inet_addr (const char *);
 	char * inet_ntoa (struct in_addr in);
 
 	/*
diff --git a/src/libCom/osi/os/sun4/osdSock.h b/src/libCom/osi/os/sun4/osdSock.h
index edf2ffb30..26d74bf37 100644
--- a/src/libCom/osi/os/sun4/osdSock.h
+++ b/src/libCom/osi/os/sun4/osdSock.h
@@ -64,7 +64,7 @@ void ipAddrToA (const struct sockaddr_in *pInetAddr,
 	 * (__SUNPRO_CC supplies this file but g++ does not supply 
 	 * an ansi protottype)
 	 */
-	unsigned long inet_addr (char *);
+	unsigned long inet_addr (const char *);
 	char * inet_ntoa (struct in_addr in);
 
 	/*