diff --git a/man3/rpc.3 b/man3/rpc.3
index 1daaaad7e..3d2fe4243 100644
--- a/man3/rpc.3
+++ b/man3/rpc.3
@@ -70,8 +70,8 @@ information with each remote procedure call.
 This is the default authentication used by RPC.
 .PP
 .nf
-.BI "AUTH *authunix_create(char *" host ", int " uid ", int " gid ,
-.BI "                      int " len ", int *" aup_gids );
+.BI "AUTH *authunix_create(char *" host ", uid_t " uid ", gid_t " gid ,
+.BI "                      int " len ", gid_t *" aup_gids );
 .fi
 .IP
 Create and return an RPC authentication handle that contains
@@ -100,7 +100,7 @@ with the appropriate parameters.
 .nf
 .BI "int callrpc(char *" host ", unsigned long " prognum ,
 .BI "            unsigned long " versnum ", unsigned long " procnum ,
-.BI "            xdrproc_t " inproc ", char *" in ,
+.BI "            xdrproc_t " inproc ", const char *" in ,
 .BI "            xdrproc_t " outproc ", char *" out );
 .fi
 .IP
@@ -216,8 +216,8 @@ If the RPC library opened the associated socket, it will close it also.
 Otherwise, the socket remains open.
 .PP
 .nf
-.BI "CLIENT *clnt_create(char *" host ", unsigned long " prog ,
-.BI "                    unsigned long " vers ", char *" proto );
+.BI "CLIENT *clnt_create(const char *" host ", unsigned long " prog ,
+.BI "                    unsigned long " vers ", const char *" proto );
 .fi
 .IP
 Generic client creation routine.
@@ -305,7 +305,7 @@ handle to the structure at address
 .IR errp .
 .PP
 .nf
-.BI "void clnt_pcreateerror(char *" s );
+.BI "void clnt_pcreateerror(const char *" s );
 .fi
 .IP
 Print a message to standard error indicating why a client RPC
@@ -332,7 +332,7 @@ Used after
 .BR callrpc ().
 .PP
 .nf
-.BI "clnt_perror(CLIENT *" clnt ", char *" s );
+.BI "clnt_perror(CLIENT *" clnt ", const char *" s );
 .fi
 .IP
 Print a message to standard error indicating why an RPC call failed;
@@ -345,7 +345,7 @@ Used after
 .BR clnt_call ().
 .PP
 .nf
-.BI "char *clnt_spcreateerror(char *" s );
+.BI "char *clnt_spcreateerror(const char *" s );
 .fi
 .IP
 Like
@@ -383,7 +383,7 @@ returns pointer to static data, but the
 result will not get overwritten on each call.
 .PP
 .nf
-.BI "char *clnt_sperror(CLIENT *" rpch ", char *" s );
+.BI "char *clnt_sperror(CLIENT *" rpch ", const char *" s );
 .fi
 .IP
 Like
@@ -601,7 +601,7 @@ See also
 .PP
 .nf
 .BI "bool_t pmap_set(unsigned long " prognum ", unsigned long " versnum ,
-.BI "                unsigned int " protocol ", unsigned short " port );
+.BI "                int " protocol ", unsigned short " port );
 .fi
 .IP
 A user interface to the
@@ -781,7 +781,7 @@ This interface is obsoleted by
 .nf
 .BI "bool_t svc_register(SVCXPRT *" xprt ", unsigned long " prognum ,
 .BI "                    unsigned long " versnum ,
-.BI "                    void (*" dispatch ")(svc_req *, SVCXPRT *),"
+.BI "                    void (*" dispatch ")(struct svc_req *, SVCXPRT *),"
 .BI "                    unsigned long " protocol );
 .fi
 .IP
@@ -894,7 +894,8 @@ Called when the desired program is not registered with the RPC package.
 Service implementors usually do not need this routine.
 .PP
 .nf
-.BI "void svcerr_progvers(SVCXPRT *" xprt );
+.BI "void svcerr_progvers(SVCXPRT *" xprt ", unsigned long " low_vers ,
+.BI "                     unsigned long " high_vers );
 .fi
 .IP
 Called when the desired version of a program is not registered